From 1b90604b2d019002e66c5f9f74c1e09ce45db2cd Mon Sep 17 00:00:00 2001 From: Dmitry Verkhoturov Date: Sun, 2 Apr 2023 09:34:32 +0200 Subject: [PATCH] update go modules, fix Apple auth redirect Previously the redirect after successful authentication didn't work. --- backend/_example/memory_store/go.mod | 20 +- backend/_example/memory_store/go.sum | 55 +- backend/app/cmd/server.go | 7 +- backend/app/store/formatter_test.go | 4 +- backend/go.mod | 55 +- backend/go.sum | 669 +- .../go/compute/internal/version.go | 18 + .../go/compute/metadata/CHANGES.md | 19 + .../go/compute/metadata/LICENSE | 202 + .../go/compute/metadata/README.md | 27 + .../go/compute/metadata/metadata.go | 6 +- .../go/compute/metadata/tidyfix.go | 23 + .../github.com/PuerkitoBio/goquery/README.md | 3 + .../PuerkitoBio/goquery/utilities.go | 6 +- .../alecthomas/chroma/v2/.gitignore | 1 + .../alecthomas/chroma/v2/.golangci.yml | 1 + .../github.com/alecthomas/chroma/v2/Makefile | 6 +- 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+ .../reflect/protoreflect/value_union.go | 2 + .../reflect/protoregistry/registry.go | 2 + .../protobuf/runtime/protoimpl/version.go | 8 +- backend/vendor/modules.txt | 74 +- 367 files changed, 29158 insertions(+), 11931 deletions(-) create mode 100644 backend/vendor/cloud.google.com/go/compute/internal/version.go create mode 100644 backend/vendor/cloud.google.com/go/compute/metadata/CHANGES.md create mode 100644 backend/vendor/cloud.google.com/go/compute/metadata/LICENSE create mode 100644 backend/vendor/cloud.google.com/go/compute/metadata/README.md create mode 100644 backend/vendor/cloud.google.com/go/compute/metadata/tidyfix.go delete mode 100644 backend/vendor/github.com/alecthomas/chroma/v2/lexers/bashsession.go create mode 100644 backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/bashsession.xml create mode 100644 backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/holyc.xml create mode 100644 backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/natural.xml create mode 100644 backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/z80.xml rename backend/vendor/github.com/golang/snappy/{decode_asm.go => decode_amd64.go} (93%) delete mode 100644 backend/vendor/github.com/golang/snappy/decode_arm64.s rename backend/vendor/github.com/golang/snappy/{encode_asm.go => encode_amd64.go} (97%) delete mode 100644 backend/vendor/github.com/golang/snappy/encode_arm64.s create mode 100644 backend/vendor/github.com/gorilla/websocket/client_clone.go create mode 100644 backend/vendor/github.com/gorilla/websocket/client_clone_legacy.go create mode 100644 backend/vendor/github.com/gorilla/websocket/conn_write.go create mode 100644 backend/vendor/github.com/gorilla/websocket/conn_write_legacy.go delete mode 100644 backend/vendor/github.com/gorilla/websocket/tls_handshake.go delete mode 100644 backend/vendor/github.com/gorilla/websocket/tls_handshake_116.go create mode 100644 backend/vendor/github.com/gorilla/websocket/trace.go create mode 100644 backend/vendor/github.com/gorilla/websocket/trace_17.go delete mode 100644 backend/vendor/github.com/hashicorp/golang-lru/.golangci.yml delete mode 100644 backend/vendor/github.com/hashicorp/golang-lru/testing.go delete mode 100644 backend/vendor/github.com/klauspost/compress/huff0/autogen.go delete mode 100644 backend/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s delete mode 100644 backend/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in delete mode 100644 backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.go delete mode 100644 backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.s delete mode 100644 backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.s.in delete mode 100644 backend/vendor/github.com/klauspost/compress/huff0/decompress_generic.go delete mode 100644 backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo.go delete mode 100644 backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo_amd64.go delete mode 100644 backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo_amd64.s delete mode 100644 backend/vendor/github.com/klauspost/compress/zstd/seqdec_amd64.go delete mode 100644 backend/vendor/github.com/klauspost/compress/zstd/seqdec_amd64.s delete mode 100644 backend/vendor/github.com/klauspost/compress/zstd/seqdec_generic.go delete mode 100644 backend/vendor/github.com/youmark/pkcs8/cipher.go delete mode 100644 backend/vendor/github.com/youmark/pkcs8/cipher_3des.go delete mode 100644 backend/vendor/github.com/youmark/pkcs8/cipher_aes.go delete mode 100644 backend/vendor/github.com/youmark/pkcs8/kdf_pbkdf2.go delete mode 100644 backend/vendor/github.com/youmark/pkcs8/kdf_scrypt.go delete mode 100644 backend/vendor/go.etcd.io/bbolt/.travis.yml create mode 100644 backend/vendor/go.etcd.io/bbolt/bolt_loong64.go create mode 100644 backend/vendor/go.etcd.io/bbolt/tx_check.go create mode 100644 backend/vendor/go.uber.org/goleak/internal/stack/doc.go delete mode 100644 backend/vendor/golang.org/x/crypto/scrypt/scrypt.go delete mode 100644 backend/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go create mode 100644 backend/vendor/golang.org/x/sys/internal/unsafeheader/unsafeheader.go create mode 100644 backend/vendor/golang.org/x/sys/windows/aliases.go create mode 100644 backend/vendor/golang.org/x/sys/windows/dll_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/empty.s create mode 100644 backend/vendor/golang.org/x/sys/windows/env_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/eventlog.go create mode 100644 backend/vendor/golang.org/x/sys/windows/exec_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/memory_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/mkerrors.bash create mode 100644 backend/vendor/golang.org/x/sys/windows/mkknownfolderids.bash create mode 100644 backend/vendor/golang.org/x/sys/windows/mksyscall.go create mode 100644 backend/vendor/golang.org/x/sys/windows/race.go create mode 100644 backend/vendor/golang.org/x/sys/windows/race0.go create mode 100644 backend/vendor/golang.org/x/sys/windows/security_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/service.go create mode 100644 backend/vendor/golang.org/x/sys/windows/setupapi_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/str.go create mode 100644 backend/vendor/golang.org/x/sys/windows/syscall.go create mode 100644 backend/vendor/golang.org/x/sys/windows/syscall_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/types_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/types_windows_386.go create mode 100644 backend/vendor/golang.org/x/sys/windows/types_windows_amd64.go create mode 100644 backend/vendor/golang.org/x/sys/windows/types_windows_arm.go create mode 100644 backend/vendor/golang.org/x/sys/windows/types_windows_arm64.go create mode 100644 backend/vendor/golang.org/x/sys/windows/zerrors_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/zknownfolderids_windows.go create mode 100644 backend/vendor/golang.org/x/sys/windows/zsyscall_windows.go delete mode 100644 backend/vendor/google.golang.org/protobuf/AUTHORS delete mode 100644 backend/vendor/google.golang.org/protobuf/CONTRIBUTORS diff --git a/backend/_example/memory_store/go.mod b/backend/_example/memory_store/go.mod index f49eae7c..52dd7e9e 100644 --- a/backend/_example/memory_store/go.mod +++ b/backend/_example/memory_store/go.mod @@ -4,17 +4,17 @@ go 1.17 require ( github.com/go-pkgz/jrpc v0.3.0 - github.com/go-pkgz/lgr v0.10.4 + github.com/go-pkgz/lgr v0.11.0 github.com/jessevdk/go-flags v1.5.0 - github.com/stretchr/testify v1.8.1 + github.com/stretchr/testify v1.8.2 github.com/umputun/remark42/backend v1.11.2 ) require ( github.com/Depado/bfchroma/v2 v2.0.0 // indirect - github.com/PuerkitoBio/goquery v1.8.0 // indirect + github.com/PuerkitoBio/goquery v1.8.1 // indirect github.com/ajg/form v1.5.1 // indirect - github.com/alecthomas/chroma/v2 v2.4.0 // indirect + github.com/alecthomas/chroma/v2 v2.7.0 // indirect github.com/andybalholm/cascadia v1.3.1 // indirect github.com/aymerick/douceur v0.2.0 // indirect github.com/davecgh/go-spew v1.1.1 // indirect @@ -26,16 +26,16 @@ require ( github.com/go-pkgz/expirable-cache v0.1.0 // indirect github.com/go-pkgz/rest v1.17.0 // indirect github.com/gorilla/css v1.0.0 // indirect - github.com/hashicorp/errwrap v1.1.0 // indirect + github.com/hashicorp/errwrap v1.0.0 // indirect github.com/hashicorp/go-multierror v1.1.1 // indirect - github.com/microcosm-cc/bluemonday v1.0.21 // indirect + github.com/microcosm-cc/bluemonday v1.0.23 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect github.com/rs/xid v1.4.0 // indirect github.com/russross/blackfriday/v2 v2.1.0 // indirect - go.etcd.io/bbolt v1.3.6 // indirect - golang.org/x/image v0.3.0 // indirect - golang.org/x/net v0.5.0 // indirect - golang.org/x/sys v0.4.0 // indirect + go.etcd.io/bbolt v1.3.7 // indirect + golang.org/x/image v0.6.0 // indirect + golang.org/x/net v0.8.0 // indirect + golang.org/x/sys v0.6.0 // indirect gopkg.in/yaml.v3 v3.0.1 // indirect ) diff --git a/backend/_example/memory_store/go.sum b/backend/_example/memory_store/go.sum index d0fd28b2..c3a3ac0f 100644 --- a/backend/_example/memory_store/go.sum +++ b/backend/_example/memory_store/go.sum @@ -1,13 +1,13 @@ github.com/Depado/bfchroma/v2 v2.0.0 h1:IRpN9BPkNwEpR6w1ectIcNWOuhDSLx+8f1pn83fzxx8= github.com/Depado/bfchroma/v2 v2.0.0/go.mod h1:wFwW/Pw8Tnd0irzgO9Zxtxgzp3aPS8qBWlyadxujxmw= -github.com/PuerkitoBio/goquery v1.8.0 h1:PJTF7AmFCFKk1N6V6jmKfrNH9tV5pNE6lZMkG0gta/U= -github.com/PuerkitoBio/goquery v1.8.0/go.mod h1:ypIiRMtY7COPGk+I/YbZLbxsxn9g5ejnI2HSMtkjZvI= +github.com/PuerkitoBio/goquery v1.8.1 h1:uQxhNlArOIdbrH1tr0UXwdVFgDcZDrZVdcpygAcwmWM= +github.com/PuerkitoBio/goquery v1.8.1/go.mod h1:Q8ICL1kNUJ2sXGoAhPGUdYDJvgQgHzJsnnd3H7Ho5jQ= github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU= github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY= -github.com/alecthomas/assert/v2 v2.2.0 h1:f6L/b7KE2bfA+9O4FL3CM/xJccDEwPVYd5fALBiuwvw= -github.com/alecthomas/chroma/v2 v2.4.0 h1:Loe2ZjT5x3q1bcWwemqyqEi8p11/IV/ncFCeLYDpWC4= -github.com/alecthomas/chroma/v2 v2.4.0/go.mod h1:6kHzqF5O6FUSJzBXW7fXELjb+e+7OXW4UpoPqMO7IBQ= -github.com/alecthomas/repr v0.1.0 h1:ENn2e1+J3k09gyj2shc0dHr/yjaWSHRlrJ4DPMevDqE= +github.com/alecthomas/assert/v2 v2.2.1 h1:XivOgYcduV98QCahG8T5XTezV5bylXe+lBxLG2K2ink= +github.com/alecthomas/chroma/v2 v2.7.0 h1:hm1rY6c/Ob4eGclpQ7X/A3yhqBOZNUTk9q+yhyLIViI= +github.com/alecthomas/chroma/v2 v2.7.0/go.mod h1:yrkMI9807G1ROx13fhe1v6PN2DDeaR73L3d+1nmYQtw= +github.com/alecthomas/repr v0.2.0 h1:HAzS41CIzNW5syS8Mf9UwXhNH1J9aix/BvDRf1Ml2Yk= github.com/andybalholm/cascadia v1.3.1 h1:nhxRkql1kdYCc8Snf7D5/D3spOX+dBgjA6u8x004T2c= github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEqc0Sk8XGwHqvA= github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk= @@ -32,16 +32,15 @@ github.com/go-pkgz/expirable-cache v0.1.0 h1:3bw0m8vlTK8qlwz5KXuygNBTkiKRTPrAGXU github.com/go-pkgz/expirable-cache v0.1.0/go.mod h1:GTrEl0X+q0mPNqN6dtcQXksACnzCBQ5k/k1SwXJsZKs= github.com/go-pkgz/jrpc v0.3.0 h1:Fls38KqPsHzvp0FWfivr6cGnncC+iFBodHBqvUPY+0U= github.com/go-pkgz/jrpc v0.3.0/go.mod h1:MFtKs75JESiSqVicsQkgN2iDFFuCd3gVT1/vKiwRi00= -github.com/go-pkgz/lgr v0.10.4 h1:l7qyFjqEZgwRgaQQSEp6tve4A3OU80VrfzpvtEX8ngw= -github.com/go-pkgz/lgr v0.10.4/go.mod h1:CD0s1z6EFpIUplV067gitF77tn25JItzwHNKAPqeCF0= +github.com/go-pkgz/lgr v0.11.0 h1:9XH5o+vj09L0sRWEswIGK1lJ6g07xVB4/Z28RV9Z+qM= +github.com/go-pkgz/lgr v0.11.0/go.mod h1:4rdRmMSs4yGFjnUg0rSDbKx21LmFNZoH4y8OLl3qDnU= github.com/go-pkgz/rest v1.15.6/go.mod h1:KUWAqbDteYGS/CiXftomQsKjtEOifXsJ36Ka0skYbmk= github.com/go-pkgz/rest v1.17.0 h1:LoBI/lDBMuqwWhOOkc6thM9NnwJO+K9nWvCOjZ7BAgE= github.com/go-pkgz/rest v1.17.0/go.mod h1:HHlLOt02NJc2sgffXBF6hYVMcRo4Gz3vjg43zTzN7VM= github.com/gorilla/css v1.0.0 h1:BQqNyPTi50JCFMTw/b67hByjMVXZRwGha6wxVGkeihY= github.com/gorilla/css v1.0.0/go.mod h1:Dn721qIggHpt4+EFCcTLTU/vk5ySda2ReITrtgBl60c= +github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA= github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4= -github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I= -github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4= github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo= github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM= github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM= @@ -52,8 +51,8 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE= github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= -github.com/microcosm-cc/bluemonday v1.0.21 h1:dNH3e4PSyE4vNX+KlRGHT5KrSvjeUkoNPwEORjffHJg= -github.com/microcosm-cc/bluemonday v1.0.21/go.mod h1:ytNkv4RrDrLJ2pqlsSI46O6IVXmZOBBD4SaJyDwwTkM= +github.com/microcosm-cc/bluemonday v1.0.23 h1:SMZe2IGa0NuHvnVNAZ+6B38gsTbi5e4sViiWJyDDqFY= +github.com/microcosm-cc/bluemonday v1.0.23/go.mod h1:mN70sk7UkkF8TUr2IGBpNN0jAgStuPzlK76QuruE/z4= github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= @@ -64,48 +63,54 @@ github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQD github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw= github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo= -github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU= -github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk= -github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4= +github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8= +github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4= github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= -go.etcd.io/bbolt v1.3.6 h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU= -go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4= +go.etcd.io/bbolt v1.3.7 h1:j+zJOnnEjF/kyHlDDgGnVL/AIqIJPq8UoB2GSNfkUfQ= +go.etcd.io/bbolt v1.3.7/go.mod h1:N9Mkw9X8x5fupy0IKsmuqVtoGDyxsaDlbk4Rd05IAQw= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc= -golang.org/x/image v0.3.0 h1:HTDXbdK9bjfSWkPzDJIw89W8CAtfFGduujWs33NLLsg= -golang.org/x/image v0.3.0/go.mod h1:fXd9211C/0VTlYuAcOhW8dY/RtEJqODXOWBDpmYBf+A= +golang.org/x/image v0.6.0 h1:bR8b5okrPI3g/gyZakLZHeWxAR8Dn5CyxXv1hLH5g/4= +golang.org/x/image v0.6.0/go.mod h1:MXLdDR43H7cDJq5GEGXEVeeNhPgi+YYEQ2pC1byI1x0= golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4= +golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs= golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= golang.org/x/net v0.0.0-20210916014120-12bc252f5db8/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c= -golang.org/x/net v0.5.0 h1:GyT4nK/YDHSqa1c4753ouYCDajOYKTja9Xb/OHtgvSw= -golang.org/x/net v0.5.0/go.mod h1:DivGGAXEgPSlEBzxGzZI+ZLohi+xUj054jfeKui00ws= +golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs= +golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs= +golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ= +golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc= golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= -golang.org/x/sys v0.0.0-20200923182605-d9f96fdee20d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20210320140829-1e4c9ba3b0c4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.4.0 h1:Zr2JFtRQNX3BCZ8YtxRE9hNJYC8J6I1MVbMg6owUp18= -golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ= +golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= +golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= -golang.org/x/text v0.6.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8= +golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8= +golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8= golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc= +golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY= diff --git a/backend/app/cmd/server.go b/backend/app/cmd/server.go index c8781f53..ed0380bf 100644 --- a/backend/app/cmd/server.go +++ b/backend/app/cmd/server.go @@ -857,9 +857,10 @@ func (s *ServerCommand) addAuthProviders(authenticator *auth.Service) error { if s.Auth.Apple.CID != "" && s.Auth.Apple.TID != "" && s.Auth.Apple.KID != "" { err := authenticator.AddAppleProvider( provider.AppleConfig{ - ClientID: s.Auth.Apple.CID, - TeamID: s.Auth.Apple.TID, - KeyID: s.Auth.Apple.KID, + ClientID: s.Auth.Apple.CID, + TeamID: s.Auth.Apple.TID, + KeyID: s.Auth.Apple.KID, + ResponseMode: "query", // default is form_post which wouldn't work here }, provider.LoadApplePrivateKeyFromFile(s.Auth.Apple.PrivateKeyFilePath), ) diff --git a/backend/app/store/formatter_test.go b/backend/app/store/formatter_test.go index 90e7067c..28045e2a 100644 --- a/backend/app/store/formatter_test.go +++ b/backend/app/store/formatter_test.go @@ -36,9 +36,9 @@ func TestFormatter_FormatText(t *testing.T) { }, {"— not translated #354", "

— not translated #354

\n!converted", "mdash"}, {"smth\n```go\nfunc main(aa string) int {return 0}\n```", `

smth

-
func main(aa string) int {return 0}
+
func main(aa string) int {return 0}
 
!converted`, "code with language"},
-		{"```\ntest_code\n```", `
test_code
+		{"```\ntest_code\n```", `
test_code
 
!converted`, "code without language"},
 	}
 	f := NewCommentFormatter(mockConverter{})
diff --git a/backend/go.mod b/backend/go.mod
index 14b06125..3c70d35b 100644
--- a/backend/go.mod
+++ b/backend/go.mod
@@ -4,17 +4,17 @@ go 1.17
 
 require (
 	github.com/Depado/bfchroma/v2 v2.0.0
-	github.com/PuerkitoBio/goquery v1.8.0
-	github.com/alecthomas/chroma/v2 v2.4.0
+	github.com/PuerkitoBio/goquery v1.8.1
+	github.com/alecthomas/chroma/v2 v2.7.0
 	github.com/didip/tollbooth/v7 v7.0.1
 	github.com/didip/tollbooth_chi v0.0.0-20220719025231-d662a7f6928f
 	github.com/go-chi/chi/v5 v5.0.8
 	github.com/go-chi/cors v1.2.1
 	github.com/go-chi/render v1.0.2
-	github.com/go-pkgz/auth v1.20.1-0.20230115185815-90b4b947ab05
+	github.com/go-pkgz/auth v1.21.0
 	github.com/go-pkgz/jrpc v0.3.0
-	github.com/go-pkgz/lcw v1.0.3-0.20221226231215-a66ea7c4aff7
-	github.com/go-pkgz/lgr v0.10.4
+	github.com/go-pkgz/lcw v1.0.2
+	github.com/go-pkgz/lgr v0.11.0
 	github.com/go-pkgz/notify v0.2.0
 	github.com/go-pkgz/repeater v1.1.3
 	github.com/go-pkgz/rest v1.17.0
@@ -24,21 +24,22 @@ require (
 	github.com/gorilla/feeds v1.1.1
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/jessevdk/go-flags v1.5.0
-	github.com/kyokomi/emoji/v2 v2.2.11
-	github.com/microcosm-cc/bluemonday v1.0.21
+	github.com/kyokomi/emoji/v2 v2.2.12
+	github.com/microcosm-cc/bluemonday v1.0.23
 	github.com/rs/xid v1.4.0
 	github.com/russross/blackfriday/v2 v2.1.0
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
-	github.com/stretchr/testify v1.8.1
-	go.etcd.io/bbolt v1.3.6
-	go.uber.org/goleak v1.2.0
-	golang.org/x/crypto v0.5.0
-	golang.org/x/image v0.3.0
-	golang.org/x/net v0.5.0
+	github.com/stretchr/testify v1.8.2
+	go.etcd.io/bbolt v1.3.7
+	go.uber.org/goleak v1.2.1
+	golang.org/x/crypto v0.7.0
+	golang.org/x/image v0.6.0
+	golang.org/x/net v0.8.0
 )
 
 require (
-	cloud.google.com/go/compute v1.6.1 // indirect
+	cloud.google.com/go/compute v1.14.0 // indirect
+	cloud.google.com/go/compute/metadata v0.2.3 // indirect
 	github.com/ajg/form v1.5.1 // indirect
 	github.com/andybalholm/cascadia v1.3.1 // indirect
 	github.com/aymerick/douceur v0.2.0 // indirect
@@ -47,17 +48,17 @@ require (
 	github.com/dghubble/oauth1 v0.7.2 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dlclark/regexp2 v1.4.0 // indirect
-	github.com/go-oauth2/oauth2/v4 v4.5.1 // indirect
+	github.com/go-oauth2/oauth2/v4 v4.5.2 // indirect
 	github.com/go-pkgz/email v0.4.1 // indirect
 	github.com/go-pkgz/expirable-cache v0.1.0 // indirect
 	github.com/go-redis/redis/v8 v8.11.5 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/golang/snappy v0.0.4 // indirect
+	github.com/golang/snappy v0.0.1 // indirect
 	github.com/gorilla/css v1.0.0 // indirect
-	github.com/gorilla/websocket v1.5.0 // indirect
-	github.com/hashicorp/errwrap v1.1.0 // indirect
-	github.com/hashicorp/golang-lru v0.6.0 // indirect
-	github.com/klauspost/compress v1.15.2 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
+	github.com/hashicorp/golang-lru v0.5.4 // indirect
+	github.com/klauspost/compress v1.15.0 // indirect
 	github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe // indirect
 	github.com/nullrocks/identicon v0.0.0-20180626043057-7875f45b0022 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
@@ -66,13 +67,13 @@ require (
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
 	github.com/xdg-go/scram v1.1.1 // indirect
 	github.com/xdg-go/stringprep v1.0.3 // indirect
-	github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a // indirect
-	go.mongodb.org/mongo-driver v1.11.1 // indirect
-	golang.org/x/oauth2 v0.4.0 // indirect
-	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 // indirect
-	golang.org/x/sys v0.4.0 // indirect
-	golang.org/x/text v0.6.0 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
+	go.mongodb.org/mongo-driver v1.11.3 // indirect
+	golang.org/x/oauth2 v0.6.0 // indirect
+	golang.org/x/sync v0.1.0 // indirect
+	golang.org/x/sys v0.6.0 // indirect
+	golang.org/x/text v0.8.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.28.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/backend/go.sum b/backend/go.sum
index 26499089..3b2b9524 100644
--- a/backend/go.sum
+++ b/backend/go.sum
@@ -1,108 +1,36 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
-cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
-cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
-cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
-cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
-cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
-cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
-cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
-cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
-cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
-cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
-cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
-cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
-cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
-cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
-cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
-cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
-cloud.google.com/go v0.83.0/go.mod h1:Z7MJUsANfY0pYPdw0lbnivPx4/vhy/e2FEkSkF7vAVY=
-cloud.google.com/go v0.84.0/go.mod h1:RazrYuxIK6Kb7YrzzhPoLmCVzl7Sup4NrbKPg8KHSUM=
-cloud.google.com/go v0.87.0/go.mod h1:TpDYlFy7vuLzZMMZ+B6iRiELaY7z/gJPaqbMx6mlWcY=
-cloud.google.com/go v0.90.0/go.mod h1:kRX0mNRHe0e2rC6oNakvwQqzyDmg57xJ+SZU1eT2aDQ=
-cloud.google.com/go v0.93.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
-cloud.google.com/go v0.94.1/go.mod h1:qAlAugsXlC+JWO+Bke5vCtc9ONxjQT3drlTTnAplMW4=
-cloud.google.com/go v0.97.0/go.mod h1:GF7l59pYBVlXQIBLx3a761cZ41F9bBH3JUlihCt2Udc=
-cloud.google.com/go v0.99.0/go.mod h1:w0Xx2nLzqWJPuozYQX+hFfCSI8WioryfRDzkoI/Y2ZA=
-cloud.google.com/go v0.100.2 h1:t9Iw5QH5v4XtlEQaCtUY7x6sCABps8sW0acw7e2WQ6Y=
-cloud.google.com/go v0.100.2/go.mod h1:4Xra9TjzAeYHrl5+oeLlzbM2k3mjVhZh4UqTZ//w99A=
-cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
-cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
-cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
-cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
-cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
-cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
-cloud.google.com/go/compute v0.1.0/go.mod h1:GAesmwr110a34z04OlxYkATPBEfVhkymfTBXtfbBFow=
-cloud.google.com/go/compute v1.3.0/go.mod h1:cCZiE1NHEtai4wiufUhW8I8S1JKkAnhnQJWM7YD99wM=
-cloud.google.com/go/compute v1.5.0/go.mod h1:9SMHyhJlzhlkJqrPAc839t2BZFTSk6Jdj6mkzQJeu0M=
-cloud.google.com/go/compute v1.6.0/go.mod h1:T29tfhtVbq1wvAPo0E3+7vhgmkOYeXjhFvz/FMzPu0s=
-cloud.google.com/go/compute v1.6.1 h1:2sMmt8prCn7DPaG4Pmh0N3Inmc8cT8ae5k1M6VJ9Wqc=
-cloud.google.com/go/compute v1.6.1/go.mod h1:g85FgpzFvNULZ+S8AYq87axRKuf2Kh7deLqV/jJ3thU=
-cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
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@@ -904,13 +377,3 @@ gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C
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diff --git a/backend/vendor/cloud.google.com/go/compute/internal/version.go b/backend/vendor/cloud.google.com/go/compute/internal/version.go
new file mode 100644
index 00000000..c9ba9182
--- /dev/null
+++ b/backend/vendor/cloud.google.com/go/compute/internal/version.go
@@ -0,0 +1,18 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package internal
+
+// Version is the current tagged release of the library.
+const Version = "1.14.0"
diff --git a/backend/vendor/cloud.google.com/go/compute/metadata/CHANGES.md b/backend/vendor/cloud.google.com/go/compute/metadata/CHANGES.md
new file mode 100644
index 00000000..06b95734
--- /dev/null
+++ b/backend/vendor/cloud.google.com/go/compute/metadata/CHANGES.md
@@ -0,0 +1,19 @@
+# Changes
+
+## [0.2.3](https://github.com/googleapis/google-cloud-go/compare/compute/metadata/v0.2.2...compute/metadata/v0.2.3) (2022-12-15)
+
+
+### Bug Fixes
+
+* **compute/metadata:** Switch DNS lookup to an absolute lookup ([119b410](https://github.com/googleapis/google-cloud-go/commit/119b41060c7895e45e48aee5621ad35607c4d021)), refs [#7165](https://github.com/googleapis/google-cloud-go/issues/7165)
+
+## [0.2.2](https://github.com/googleapis/google-cloud-go/compare/compute/metadata/v0.2.1...compute/metadata/v0.2.2) (2022-12-01)
+
+
+### Bug Fixes
+
+* **compute/metadata:** Set IdleConnTimeout for http.Client ([#7084](https://github.com/googleapis/google-cloud-go/issues/7084)) ([766516a](https://github.com/googleapis/google-cloud-go/commit/766516aaf3816bfb3159efeea65aa3d1d205a3e2)), refs [#5430](https://github.com/googleapis/google-cloud-go/issues/5430)
+
+## [0.1.0] (2022-10-26)
+
+Initial release of metadata being it's own module.
diff --git a/backend/vendor/cloud.google.com/go/compute/metadata/LICENSE b/backend/vendor/cloud.google.com/go/compute/metadata/LICENSE
new file mode 100644
index 00000000..d6456956
--- /dev/null
+++ b/backend/vendor/cloud.google.com/go/compute/metadata/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
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+
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+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+      the terms of any separate license agreement you may have executed
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+
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+
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diff --git a/backend/vendor/cloud.google.com/go/compute/metadata/README.md b/backend/vendor/cloud.google.com/go/compute/metadata/README.md
new file mode 100644
index 00000000..f940fb2c
--- /dev/null
+++ b/backend/vendor/cloud.google.com/go/compute/metadata/README.md
@@ -0,0 +1,27 @@
+# Compute API
+
+[![Go Reference](https://pkg.go.dev/badge/cloud.google.com/go/compute.svg)](https://pkg.go.dev/cloud.google.com/go/compute/metadata)
+
+This is a utility library for communicating with Google Cloud metadata service
+on Google Cloud.
+
+## Install
+
+```bash
+go get cloud.google.com/go/compute/metadata
+```
+
+## Go Version Support
+
+See the [Go Versions Supported](https://github.com/googleapis/google-cloud-go#go-versions-supported)
+section in the root directory's README.
+
+## Contributing
+
+Contributions are welcome. Please, see the [CONTRIBUTING](https://github.com/GoogleCloudPlatform/google-cloud-go/blob/main/CONTRIBUTING.md)
+document for details.
+
+Please note that this project is released with a Contributor Code of Conduct.
+By participating in this project you agree to abide by its terms. See
+[Contributor Code of Conduct](https://github.com/GoogleCloudPlatform/google-cloud-go/blob/main/CONTRIBUTING.md#contributor-code-of-conduct)
+for more information.
diff --git a/backend/vendor/cloud.google.com/go/compute/metadata/metadata.go b/backend/vendor/cloud.google.com/go/compute/metadata/metadata.go
index 111309f3..c17faa14 100644
--- a/backend/vendor/cloud.google.com/go/compute/metadata/metadata.go
+++ b/backend/vendor/cloud.google.com/go/compute/metadata/metadata.go
@@ -16,7 +16,7 @@
 // metadata and API service accounts.
 //
 // This package is a wrapper around the GCE metadata service,
-// as documented at https://developers.google.com/compute/docs/metadata.
+// as documented at https://cloud.google.com/compute/docs/metadata/overview.
 package metadata // import "cloud.google.com/go/compute/metadata"
 
 import (
@@ -70,7 +70,9 @@ func newDefaultHTTPClient() *http.Client {
 				Timeout:   2 * time.Second,
 				KeepAlive: 30 * time.Second,
 			}).Dial,
+			IdleConnTimeout: 60 * time.Second,
 		},
+		Timeout: 5 * time.Second,
 	}
 }
 
@@ -145,7 +147,7 @@ func testOnGCE() bool {
 
 	go func() {
 		resolver := &net.Resolver{}
-		addrs, err := resolver.LookupHost(ctx, "metadata.google.internal")
+		addrs, err := resolver.LookupHost(ctx, "metadata.google.internal.")
 		if err != nil || len(addrs) == 0 {
 			resc <- false
 			return
diff --git a/backend/vendor/cloud.google.com/go/compute/metadata/tidyfix.go b/backend/vendor/cloud.google.com/go/compute/metadata/tidyfix.go
new file mode 100644
index 00000000..4cef4850
--- /dev/null
+++ b/backend/vendor/cloud.google.com/go/compute/metadata/tidyfix.go
@@ -0,0 +1,23 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file, and the {{.RootMod}} import, won't actually become part of
+// the resultant binary.
+//go:build modhack
+// +build modhack
+
+package metadata
+
+// Necessary for safely adding multi-module repo. See: https://github.com/golang/go/wiki/Modules#is-it-possible-to-add-a-module-to-a-multi-module-repository
+import _ "cloud.google.com/go/compute/internal"
diff --git a/backend/vendor/github.com/PuerkitoBio/goquery/README.md b/backend/vendor/github.com/PuerkitoBio/goquery/README.md
index 77522340..582ccac9 100644
--- a/backend/vendor/github.com/PuerkitoBio/goquery/README.md
+++ b/backend/vendor/github.com/PuerkitoBio/goquery/README.md
@@ -40,6 +40,7 @@ Please note that because of the net/html dependency, goquery requires Go1.1+ and
 
 **Note that goquery's API is now stable, and will not break.**
 
+*    **2023-02-18 (v1.8.1)** : Update `go.mod` dependencies, update CI workflow.
 *    **2021-10-25 (v1.8.0)** : Add `Render` function to render a `Selection` to an `io.Writer` (thanks [@anthonygedeon](https://github.com/anthonygedeon)).
 *    **2021-07-11 (v1.7.1)** : Update go.mod dependencies and add dependabot config (thanks [@jauderho](https://github.com/jauderho)).
 *    **2021-06-14 (v1.7.0)** : Add `Single` and `SingleMatcher` functions to optimize first-match selection (thanks [@gdollardollar](https://github.com/gdollardollar)).
@@ -154,6 +155,8 @@ func main() {
 - [Geziyor](https://github.com/geziyor/geziyor), a fast web crawling & scraping framework for Go. Supports JS rendering.
 - [Pagser](https://github.com/foolin/pagser), a simple, easy, extensible, configurable HTML parser to struct based on goquery and struct tags.
 - [stitcherd](https://github.com/vhodges/stitcherd), A server for doing server side includes using css selectors and DOM updates.
+- [goskyr](https://github.com/jakopako/goskyr), an easily configurable command-line scraper written in Go.
+- [goGetJS](https://github.com/davemolk/goGetJS), a tool for extracting, searching, and saving JavaScript files (with optional headless browser).
 
 ## Support
 
diff --git a/backend/vendor/github.com/PuerkitoBio/goquery/utilities.go b/backend/vendor/github.com/PuerkitoBio/goquery/utilities.go
index 6d243cdd..ecd3453f 100644
--- a/backend/vendor/github.com/PuerkitoBio/goquery/utilities.go
+++ b/backend/vendor/github.com/PuerkitoBio/goquery/utilities.go
@@ -58,8 +58,8 @@ func nodeName(node *html.Node) string {
 	}
 }
 
-// Render renders the html of the first element from selector and writes it to
-// the writer.  It behaves the same as OuterHtml but writes to w instead of
+// Render renders the HTML of the first item in the selection and writes it to
+// the writer. It behaves the same as OuterHtml but writes to w instead of
 // returning the string.
 func Render(w io.Writer, s *Selection) error {
 	if s.Length() == 0 {
@@ -73,7 +73,7 @@ func Render(w io.Writer, s *Selection) error {
 // the selection - that is, the HTML including the first element's
 // tag and attributes.
 //
-// Unlike InnerHtml, this is a function and not a method on the Selection,
+// Unlike Html, this is a function and not a method on the Selection,
 // because this is not a jQuery method (in javascript-land, this is
 // a property provided by the DOM).
 func OuterHtml(s *Selection) (string, error) {
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/.gitignore b/backend/vendor/github.com/alecthomas/chroma/v2/.gitignore
index ccacd12e..6ff4b070 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/.gitignore
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/.gitignore
@@ -17,3 +17,4 @@
 _models/
 
 _examples/
+*.min.*
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/.golangci.yml b/backend/vendor/github.com/alecthomas/chroma/v2/.golangci.yml
index 0fe2eb49..120ea715 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/.golangci.yml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/.golangci.yml
@@ -48,6 +48,7 @@ linters:
     - govet
     - nosnakecase
     - testableexamples
+    - musttag
 
 linters-settings:
   govet:
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/Makefile b/backend/vendor/github.com/alecthomas/chroma/v2/Makefile
index 34e3c41c..fe7cb0be 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/Makefile
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/Makefile
@@ -1,6 +1,8 @@
 .PHONY: chromad upload all
 
 VERSION ?= $(shell git describe --tags --dirty  --always)
+export GOOS ?= linux
+export GOARCH ?= amd64
 
 all: README.md tokentype_string.go
 
@@ -12,7 +14,9 @@ tokentype_string.go: types.go
 
 chromad:
 	rm -f chromad
-	(export CGOENABLED=0 GOOS=linux GOARCH=amd64; cd ./cmd/chromad && go build -ldflags="-X 'main.version=$(VERSION)'" -o ../../chromad .)
+	esbuild --bundle cmd/chromad/static/index.js --minify --outfile=cmd/chromad/static/index.min.js
+	esbuild --bundle cmd/chromad/static/index.css --minify --outfile=cmd/chromad/static/index.min.css
+	(export CGOENABLED=0 ; cd ./cmd/chromad && go build -ldflags="-X 'main.version=$(VERSION)'" -o ../../chromad .)
 
 upload: chromad
 	scp chromad root@swapoff.org: && \
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/README.md b/backend/vendor/github.com/alecthomas/chroma/v2/README.md
index 613b071e..3b057793 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/README.md
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/README.md
@@ -27,7 +27,8 @@ translators for Pygments lexers and styles.
     2. [Formatters](#formatters)
     3. [Styles](#styles)
 6. [Command-line interface](#command-line-interface)
-7. [What's missing compared to Pygments?](#whats-missing-compared-to-pygments)
+7. [Testing lexers](#testing-lexers)
+8. [What's missing compared to Pygments?](#whats-missing-compared-to-pygments)
 
 
 
@@ -277,6 +278,20 @@ Debian and derivatives](https://manpages.debian.org/lesspipe#USER_DEFINED_FILTER
 for that setup the `chroma` executable can be just symlinked to `~/.lessfilter`.
 
 
+
+
+## Testing lexers
+If you edit some lexers and want to test it, open a shell in `cmd/chromad` and run:
+```shell
+go run .
+```
+A Link will be printed. Open it in your Browser. Now you can test on the Playground with your local changes.
+
+If you want to run the tests and the lexers, open a shell in the root directory and run:
+```shell
+go test ./lexers
+```
+
 ## What's missing compared to Pygments?
 
 - Quite a few lexers, for various reasons (pull-requests welcome):
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/formatters/html/html.go b/backend/vendor/github.com/alecthomas/chroma/v2/formatters/html/html.go
index 6dc54d92..0ad6b31c 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/formatters/html/html.go
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/formatters/html/html.go
@@ -171,10 +171,10 @@ var (
 	defaultPreWrapper = preWrapper{
 		start: func(code bool, styleAttr string) string {
 			if code {
-				return fmt.Sprintf(`
`, styleAttr)
+				return fmt.Sprintf(``, styleAttr)
 			}
 
-			return fmt.Sprintf(`
`, styleAttr)
+			return fmt.Sprintf(``, styleAttr)
 		},
 		end: func(code bool) string {
 			if code {
@@ -513,7 +513,7 @@ func (f *Formatter) styleToCSS(style *chroma.Style) map[chroma.TokenType]string
 	if f.wrapLongLines {
 		classes[chroma.PreWrapper] += `white-space: pre-wrap; word-break: break-word;`
 	}
-	lineNumbersStyle := `white-space: pre; user-select: none; margin-right: 0.4em; padding: 0 0.4em 0 0.4em;`
+	lineNumbersStyle := `white-space: pre; -webkit-user-select: none; user-select: none; margin-right: 0.4em; padding: 0 0.4em 0 0.4em;`
 	// All rules begin with default rules followed by user provided rules
 	classes[chroma.Line] = `display: flex;` + classes[chroma.Line]
 	classes[chroma.LineNumbers] = lineNumbersStyle + classes[chroma.LineNumbers]
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/bashsession.go b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/bashsession.go
deleted file mode 100644
index bea9393a..00000000
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/bashsession.go
+++ /dev/null
@@ -1,26 +0,0 @@
-package lexers
-
-import (
-	. "github.com/alecthomas/chroma/v2" // nolint
-)
-
-// BashSession lexer.
-var BashSession = Register(MustNewLexer(
-	&Config{
-		Name:      "BashSession",
-		Aliases:   []string{"bash-session", "console", "shell-session"},
-		Filenames: []string{".sh-session"},
-		MimeTypes: []string{"text/x-sh"},
-		EnsureNL:  true,
-	},
-	bashsessionRules,
-))
-
-func bashsessionRules() Rules {
-	return Rules{
-		"root": {
-			{`^((?:\[[^]]+@[^]]+\]\s?)?[#$%>])(\s*)(.*\n?)`, ByGroups(GenericPrompt, Text, Using("Bash")), nil},
-			{`^.+\n?`, GenericOutput, nil},
-		},
-	}
-}
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/bashsession.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/bashsession.xml
new file mode 100644
index 00000000..b9b55e0d
--- /dev/null
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/bashsession.xml
@@ -0,0 +1,25 @@
+
+  
+    BashSession
+    bash-session
+    console
+    shell-session
+    *.sh-session
+    text/x-sh
+    true
+  
+  
+    
+      
+        
+          
+          
+          
+        
+      
+      
+        
+      
+    
+  
+
\ No newline at end of file
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/cfengine3.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/cfengine3.xml
index 8c4c1a8f..49503050 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/cfengine3.xml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/cfengine3.xml
@@ -38,7 +38,7 @@
       
         
       
-      
+      
         
       
       
@@ -78,6 +78,12 @@
           
         
       
+      
+        
+          
+          
+        
+      
       
         
         
@@ -96,12 +102,6 @@
           
         
       
-      
-        
-          
-          
-        
-      
       
         
           
@@ -111,6 +111,9 @@
       
         
       
+      
+        
+      
       
         
       
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/diff.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/diff.xml
index c10963e2..dc0beb7f 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/diff.xml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/diff.xml
@@ -14,6 +14,18 @@
       
         
       
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
       
         
       
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/groovy.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/groovy.xml
index 0dd7b826..d49d4f3b 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/groovy.xml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/groovy.xml
@@ -56,7 +56,7 @@
       
         
       
-      
+      
         
           
           
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/holyc.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/holyc.xml
new file mode 100644
index 00000000..cd2d9d16
--- /dev/null
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/holyc.xml
@@ -0,0 +1,252 @@
+
+  
+    HolyC
+    holyc
+    *.HC
+    *.hc
+    *.HH
+    *.hh
+    *.hc.z
+    *.HC.Z
+    text/x-chdr
+    text/x-csrc
+    image/x-xbitmap
+    image/x-xpixmap
+    true
+  
+  
+    
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+        
+      
+    
+    
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+        
+      
+      
+        
+        
+      
+    
+    
+      
+        
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+    
+    
+      
+        
+          
+          
+          
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+        
+      
+    
+    
+      
+        
+        
+      
+      
+        
+        
+      
+      
+        
+        
+      
+      
+        
+      
+    
+    
+      
+        
+        
+      
+      
+        
+        
+      
+      
+        
+          
+          
+        
+        
+      
+      
+        
+          
+          
+        
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+    
+    
+      
+        
+          
+          
+        
+        
+      
+      
+        
+          
+          
+          
+          
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+          
+      
+      
+        
+      
+    
+    
+      
+        
+      
+      
+        
+          
+          
+          
+          
+          
+        
+        
+      
+      
+        
+          
+          
+          
+          
+          
+        
+      
+      
+        
+      
+    
+  
+
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/natural.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/natural.xml
new file mode 100644
index 00000000..707252b4
--- /dev/null
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/natural.xml
@@ -0,0 +1,143 @@
+
+  
+    Natural
+    natural
+    *.NSN
+    *.NSP
+    *.NSS
+    *.NSH
+    *.NSG
+    *.NSL
+    *.NSA
+    *.NSM
+    *.NSC
+    *.NS7
+    text/x-natural
+    true
+  
+  
+    
+      
+        
+      
+      
+        
+      
+      
+        
+      
+    
+    
+      
+        
+      
+      
+        
+      
+    
+    
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+          
+        
+      
+      
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+      
+    
+  
+
\ No newline at end of file
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/nim.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/nim.xml
index a1bfcf71..41c07cfb 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/nim.xml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/nim.xml
@@ -44,10 +44,10 @@
       
     
     
-      
+      
         
       
-      
+      
         
       
       
@@ -55,7 +55,7 @@
       
     
     
-      
+      
         
       
       
@@ -176,7 +176,7 @@
       
         
       
-      
+      
         
         
       
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/php.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/php.xml
index 69e9e854..c9e22ea5 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/php.xml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/php.xml
@@ -12,6 +12,7 @@
     true
     true
     true
+    3
   
   
     
@@ -208,4 +209,4 @@
       
     
   
-
\ No newline at end of file
+
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/python.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/python.xml
index a6e889c6..3c6af86e 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/python.xml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/python.xml
@@ -206,7 +206,7 @@
       
     
     
-      
+      
         
       
       
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/rust.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/rust.xml
index f41049c5..083b96ff 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/rust.xml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/rust.xml
@@ -23,9 +23,6 @@
       
     
     
-      
-        
-      
       
         
       
@@ -108,12 +105,30 @@
         
       
     
+    
+      
+        
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+      
+        
+      
+    
     
       
         
         
       
-      
+      
         
       
       
@@ -171,11 +186,9 @@
         
         
       
-      
-        
-      
-      
+      
         
+        
       
       
         
@@ -223,9 +236,6 @@
       
         
       
-      
-        
-      
       
         
       
@@ -243,8 +253,11 @@
       
         
       
-      
-        
+      
+        
+          
+          
+        
       
       
         
@@ -266,15 +279,25 @@
         
         
       
-      
-        
+      
+        
+          
+          
+        
         
       
-      
-        
+      
+        
+          
+          
+          
+        
+      
+      
+        
       
       
-        
+        
         
       
       
@@ -286,6 +309,26 @@
       
         
       
+      
+        
+      
+      
+        
+          
+          
+          
+          
+          
+        
+        
+      
+      
+        
+          
+          
+          
+        
+      
       
         
       
@@ -307,8 +350,11 @@
       
         
       
+      
+        
+      
       
-        
+        
         
       
       
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/yaml.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/yaml.xml
index baa7bd5d..97a0b6ed 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/yaml.xml
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/yaml.xml
@@ -49,7 +49,7 @@
       
     
     
-      
+      
         
           
           
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/z80.xml b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/z80.xml
new file mode 100644
index 00000000..41018326
--- /dev/null
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/z80.xml
@@ -0,0 +1,36 @@
+
+
+  
+    Z80 Assembly
+    z80
+    *.z80
+    *.asm
+    true
+  
+  
+    
+      
+      
+      
+      
+      
+      
+      
+      
+      
+      
+      
+      
+      
+      
+      
+      
+    
+    
+      
+      
+      
+    
+  
+
+
diff --git a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/raku.go b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/raku.go
index 04aa206c..8085bc7e 100644
--- a/backend/vendor/github.com/alecthomas/chroma/v2/lexers/raku.go
+++ b/backend/vendor/github.com/alecthomas/chroma/v2/lexers/raku.go
@@ -655,7 +655,7 @@ func rakuRules() Rules {
 			// Substitution
 			{`(?<=^|\b|\s)(?
   
   
-  
+  
   
   
   
@@ -71,4 +71,4 @@
   
   
   
-
\ No newline at end of file
+
diff --git a/backend/vendor/github.com/go-oauth2/oauth2/v4/model.go b/backend/vendor/github.com/go-oauth2/oauth2/v4/model.go
index 121a42d6..ec522447 100644
--- a/backend/vendor/github.com/go-oauth2/oauth2/v4/model.go
+++ b/backend/vendor/github.com/go-oauth2/oauth2/v4/model.go
@@ -10,6 +10,7 @@ type (
 		GetID() string
 		GetSecret() string
 		GetDomain() string
+		IsPublic() bool
 		GetUserID() string
 	}
 
diff --git a/backend/vendor/github.com/go-pkgz/auth/.golangci.yml b/backend/vendor/github.com/go-pkgz/auth/.golangci.yml
index 67c4ebac..bc05a546 100644
--- a/backend/vendor/github.com/go-pkgz/auth/.golangci.yml
+++ b/backend/vendor/github.com/go-pkgz/auth/.golangci.yml
@@ -67,5 +67,9 @@ issues:
       text: "Potential Slowloris Attack because ReadHeaderTimeout is not configured in the http.Server"
       linters:
         - gosec
+    - path: _test\.go
+      text: "Deferring unsafe method \"Close\" on type \"io.ReadCloser\""
+      linters:
+        - gosec
 
   exclude-use-default: false
diff --git a/backend/vendor/github.com/go-pkgz/auth/README.md b/backend/vendor/github.com/go-pkgz/auth/README.md
index 575be4c1..8de414c7 100644
--- a/backend/vendor/github.com/go-pkgz/auth/README.md
+++ b/backend/vendor/github.com/go-pkgz/auth/README.md
@@ -522,7 +522,7 @@ After completing the previous steps, you can proceed with configuring the Apple
 - _ClientID_ (**required**) - Service ID identifier which is used for Sign with Apple
 - _TeamID_ (**required**) - Identifier a developer account (use as prefix for all App ID)
 - _KeyID_ (**required**) - Identifier a generated key for Sign with Apple
-
+- _ResponseMode_  - Response Mode, please see [documentation](https://developer.apple.com/documentation/sign_in_with_apple/request_an_authorization_to_the_sign_in_with_apple_server?changes=_1_2#4066168) for reference, default is `form_post`
 
 ```go
     // apple config parameters
diff --git a/backend/vendor/github.com/go-pkgz/auth/avatar/avatar.go b/backend/vendor/github.com/go-pkgz/auth/avatar/avatar.go
index 44c021d6..78b12d9a 100644
--- a/backend/vendor/github.com/go-pkgz/auth/avatar/avatar.go
+++ b/backend/vendor/github.com/go-pkgz/auth/avatar/avatar.go
@@ -217,7 +217,7 @@ func GetGravatarURL(email string) (res string, err error) {
 	if err != nil {
 		return "", err
 	}
-	defer resp.Body.Close()
+	defer resp.Body.Close() //nolint gosec // we don't care about response body
 	if resp.StatusCode != 200 {
 		return "", fmt.Errorf("%s", resp.Status)
 	}
diff --git a/backend/vendor/github.com/go-pkgz/auth/avatar/noop.go b/backend/vendor/github.com/go-pkgz/auth/avatar/noop.go
index 7f53ca17..560bcfc1 100644
--- a/backend/vendor/github.com/go-pkgz/auth/avatar/noop.go
+++ b/backend/vendor/github.com/go-pkgz/auth/avatar/noop.go
@@ -15,18 +15,18 @@ func NewNoOp() *NoOp { return &NoOp{} }
 func (s *NoOp) String() string { return "" }
 
 // Put is a NoOp implementation
-func (s *NoOp) Put(userID string, reader io.Reader) (avatarID string, err error) { return "", nil }
+func (s *NoOp) Put(string, io.Reader) (avatarID string, err error) { return "", nil }
 
 // Get is a NoOp implementation
-func (s *NoOp) Get(avatarID string) (reader io.ReadCloser, size int, err error) {
+func (s *NoOp) Get(string) (reader io.ReadCloser, size int, err error) {
 	return io.NopCloser(bytes.NewBuffer([]byte(""))), 0, nil
 }
 
 // ID is a NoOp implementation
-func (s *NoOp) ID(avatarID string) (id string) { return "" }
+func (s *NoOp) ID(string) (id string) { return "" }
 
 // Remove is a NoOp implementation
-func (s *NoOp) Remove(avatarID string) error { return nil }
+func (s *NoOp) Remove(string) error { return nil }
 
 // List is a NoOp implementation
 func (s *NoOp) List() (ids []string, err error) { return nil, nil }
diff --git a/backend/vendor/github.com/go-pkgz/auth/avatar/store.go b/backend/vendor/github.com/go-pkgz/auth/avatar/store.go
index e26c1818..ab51a1b8 100644
--- a/backend/vendor/github.com/go-pkgz/auth/avatar/store.go
+++ b/backend/vendor/github.com/go-pkgz/auth/avatar/store.go
@@ -52,10 +52,11 @@ func NewStore(uri string) (Store, error) {
 			return nil, fmt.Errorf("can't parse mongo store uri %s: %w", uri, err)
 		}
 
-		ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
+		const timeout = time.Second * 30
+		ctx, cancel := context.WithTimeout(context.Background(), timeout)
 		defer cancel()
 
-		client, err := mongo.Connect(ctx, options.Client().ApplyURI(u))
+		client, err := mongo.Connect(ctx, options.Client().ApplyURI(u).SetConnectTimeout(timeout))
 		if err != nil {
 			return nil, fmt.Errorf("failed to connect to mongo server: %w", err)
 		}
diff --git a/backend/vendor/github.com/go-pkgz/auth/provider/apple.go b/backend/vendor/github.com/go-pkgz/auth/provider/apple.go
index 3ff3c9d0..2663cf11 100644
--- a/backend/vendor/github.com/go-pkgz/auth/provider/apple.go
+++ b/backend/vendor/github.com/go-pkgz/auth/provider/apple.go
@@ -70,9 +70,10 @@ type appleVerificationResponse struct {
 
 // AppleConfig is the main oauth2 required parameters for "Sign in with Apple"
 type AppleConfig struct {
-	ClientID string // the identifier Services ID for your app created in Apple developer account.
-	TeamID   string // developer Team ID (10 characters), required for create JWT. It available, after signed in at developer account, by link: https://developer.apple.com/account/#/membership
-	KeyID    string // private key ID  assigned to private key obtain in Apple developer account
+	ClientID     string // the identifier Services ID for your app created in Apple developer account.
+	TeamID       string // developer Team ID (10 characters), required for create JWT. It available, after signed in at developer account, by link: https://developer.apple.com/account/#/membership
+	KeyID        string // private key ID  assigned to private key obtain in Apple developer account
+	ResponseMode string // changes method of receiving data in callback. Default value "form_post" (https://developer.apple.com/documentation/sign_in_with_apple/request_an_authorization_to_the_sign_in_with_apple_server?changes=_1_2#4066168)
 
 	scopes       []string         // for this package allow only username scope and UID in token claims. Apple service API provide only "email" and "name" scope values (https://developer.apple.com/documentation/sign_in_with_apple/clientconfigi/3230955-scope)
 	privateKey   interface{}      // private key from Apple obtained in developer account (the keys section). Required for create the Client Secret (https://developer.apple.com/documentation/sign_in_with_apple/generate_and_validate_tokens#3262048)
@@ -156,16 +157,22 @@ func NewApple(p Params, appleCfg AppleConfig, privateKeyLoader PrivateKeyLoaderI
 		return nil, fmt.Errorf("required params missed: %s", strings.Join(emptyParams, ", "))
 	}
 
+	responseMode := "form_post"
+	if appleCfg.ResponseMode != "" {
+		responseMode = appleCfg.ResponseMode
+	}
+
 	ah := AppleHandler{
 		Params: p,
 		name:   "apple", // static name for an Apple provider
 
 		conf: AppleConfig{
-			ClientID: appleCfg.ClientID,
-			TeamID:   appleCfg.TeamID,
-			KeyID:    appleCfg.KeyID,
-			scopes:   []string{"name"},
-			jwkURL:   appleKeysURL,
+			ClientID:     appleCfg.ClientID,
+			TeamID:       appleCfg.TeamID,
+			KeyID:        appleCfg.KeyID,
+			scopes:       []string{"name"},
+			jwkURL:       appleKeysURL,
+			ResponseMode: responseMode,
 		},
 
 		endpoint: oauth2.Endpoint{
@@ -503,6 +510,10 @@ func (ah *AppleHandler) prepareLoginURL(state, path string) (string, error) {
 
 	scopesList := strings.Join(ah.conf.scopes, " ")
 
+	if scopesList != "" && ah.conf.ResponseMode != "form_post" {
+		return "", fmt.Errorf("response_mode must be form_post if scope is not empty")
+	}
+
 	authURL, err := url.Parse(ah.endpoint.AuthURL)
 	if err != nil {
 		return "", err
@@ -511,7 +522,7 @@ func (ah *AppleHandler) prepareLoginURL(state, path string) (string, error) {
 	query := authURL.Query()
 	query.Set("state", state)
 	query.Set("response_type", "code")
-	query.Set("response_mode", "form_post")
+	query.Set("response_mode", ah.conf.ResponseMode)
 	query.Set("client_id", ah.conf.ClientID)
 	query.Set("scope", scopesList)
 	query.Set("redirect_uri", ah.makeRedirURL(path))
diff --git a/backend/vendor/github.com/go-pkgz/auth/provider/custom_server.go b/backend/vendor/github.com/go-pkgz/auth/provider/custom_server.go
index fcee0a14..ac49f029 100644
--- a/backend/vendor/github.com/go-pkgz/auth/provider/custom_server.go
+++ b/backend/vendor/github.com/go-pkgz/auth/provider/custom_server.go
@@ -22,10 +22,11 @@ import (
 
 // CustomHandlerOpt are options to initialize a handler for oauth2 server
 type CustomHandlerOpt struct {
-	Endpoint  oauth2.Endpoint
-	InfoURL   string
-	MapUserFn func(UserData, []byte) token.User
-	Scopes    []string
+	Endpoint          oauth2.Endpoint
+	InfoURL           string
+	MapUserFn         func(UserData, []byte) token.User
+	BearerTokenHookFn BearerTokenHook
+	Scopes            []string
 }
 
 // CustomServerOpt are options to initialize a custom go-oauth2/oauth2 server
@@ -205,11 +206,12 @@ func (c *CustomServer) Shutdown() {
 // NewCustom creates a handler for go-oauth2/oauth2 server
 func NewCustom(name string, p Params, copts CustomHandlerOpt) Oauth2Handler {
 	return initOauth2Handler(p, Oauth2Handler{
-		name:     name,
-		endpoint: copts.Endpoint,
-		scopes:   copts.Scopes,
-		infoURL:  copts.InfoURL,
-		mapUser:  copts.MapUserFn,
+		name:            name,
+		endpoint:        copts.Endpoint,
+		scopes:          copts.Scopes,
+		infoURL:         copts.InfoURL,
+		mapUser:         copts.MapUserFn,
+		bearerTokenHook: copts.BearerTokenHookFn,
 	})
 }
 
diff --git a/backend/vendor/github.com/go-pkgz/auth/provider/direct.go b/backend/vendor/github.com/go-pkgz/auth/provider/direct.go
index d373c680..742ebd5a 100644
--- a/backend/vendor/github.com/go-pkgz/auth/provider/direct.go
+++ b/backend/vendor/github.com/go-pkgz/auth/provider/direct.go
@@ -69,11 +69,12 @@ func (p DirectHandler) Name() string { return p.ProviderName }
 // user=name&passwd=xyz&aud=bar
 //
 // application/json body example:
-// {
-//   "user": "name",
-//   "passwd": "xyz",
-//   "aud": "bar",
-// }
+//
+//	{
+//	  "user": "name",
+//	  "passwd": "xyz",
+//	  "aud": "bar",
+//	}
 func (p DirectHandler) LoginHandler(w http.ResponseWriter, r *http.Request) {
 	creds, err := p.getCredentials(w, r)
 	if err != nil {
@@ -184,9 +185,9 @@ func (p DirectHandler) getCredentials(w http.ResponseWriter, r *http.Request) (c
 }
 
 // AuthHandler doesn't do anything for direct login as it has no callbacks
-func (p DirectHandler) AuthHandler(w http.ResponseWriter, r *http.Request) {}
+func (p DirectHandler) AuthHandler(http.ResponseWriter, *http.Request) {}
 
 // LogoutHandler - GET /logout
-func (p DirectHandler) LogoutHandler(w http.ResponseWriter, r *http.Request) {
+func (p DirectHandler) LogoutHandler(w http.ResponseWriter, _ *http.Request) {
 	p.TokenService.Reset(w)
 }
diff --git a/backend/vendor/github.com/go-pkgz/auth/provider/oauth2.go b/backend/vendor/github.com/go-pkgz/auth/provider/oauth2.go
index 88ed4b67..ef647b18 100644
--- a/backend/vendor/github.com/go-pkgz/auth/provider/oauth2.go
+++ b/backend/vendor/github.com/go-pkgz/auth/provider/oauth2.go
@@ -22,12 +22,13 @@ type Oauth2Handler struct {
 	Params
 
 	// all of these fields specific to particular oauth2 provider
-	name     string
-	infoURL  string
-	endpoint oauth2.Endpoint
-	scopes   []string
-	mapUser  func(UserData, []byte) token.User // map info from InfoURL to User
-	conf     oauth2.Config
+	name            string
+	infoURL         string
+	endpoint        oauth2.Endpoint
+	scopes          []string
+	mapUser         func(UserData, []byte) token.User // map info from InfoURL to User
+	bearerTokenHook BearerTokenHook                   // a way to get a Bearer token received from oauth2-provider
+	conf            oauth2.Config
 }
 
 // Params to make initialized and ready to use provider
@@ -56,6 +57,9 @@ func (u UserData) Value(key string) string {
 	return ""
 }
 
+// BearerTokenHook accepts provider name, user and token, received during oauth2 authentication
+type BearerTokenHook func(provider string, user token.User, token oauth2.Token)
+
 // initOauth2Handler makes oauth2 handler for given provider
 func initOauth2Handler(p Params, service Oauth2Handler) Oauth2Handler {
 	if p.L == nil {
@@ -217,6 +221,11 @@ func (p Oauth2Handler) AuthHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if p.bearerTokenHook != nil && tok != nil {
+		p.Logf("[DEBUG] pass bearer token %s, %s", p.Name(), tok.TokenType)
+		p.bearerTokenHook(p.Name(), u, *tok)
+	}
+
 	p.Logf("[DEBUG] user info %+v", u)
 
 	// redirect to back url if presented in login query params
diff --git a/backend/vendor/github.com/go-pkgz/auth/provider/telegram.go b/backend/vendor/github.com/go-pkgz/auth/provider/telegram.go
index 6de30dfc..177c1c02 100644
--- a/backend/vendor/github.com/go-pkgz/auth/provider/telegram.go
+++ b/backend/vendor/github.com/go-pkgz/auth/provider/telegram.go
@@ -459,7 +459,7 @@ func (tg *tgAPI) request(ctx context.Context, method string, data interface{}) e
 		if err != nil {
 			return fmt.Errorf("failed to send request: %w", err)
 		}
-		defer resp.Body.Close()
+		defer resp.Body.Close() //nolint gosec // we don't care about response body
 
 		if resp.StatusCode != http.StatusOK {
 			return tg.parseError(resp.Body, resp.StatusCode)
diff --git a/backend/vendor/github.com/go-pkgz/auth/provider/verify.go b/backend/vendor/github.com/go-pkgz/auth/provider/verify.go
index 00934960..23da8263 100644
--- a/backend/vendor/github.com/go-pkgz/auth/provider/verify.go
+++ b/backend/vendor/github.com/go-pkgz/auth/provider/verify.go
@@ -199,10 +199,10 @@ func (e VerifyHandler) sendConfirmation(w http.ResponseWriter, r *http.Request)
 }
 
 // AuthHandler doesn't do anything for direct login as it has no callbacks
-func (e VerifyHandler) AuthHandler(w http.ResponseWriter, r *http.Request) {}
+func (e VerifyHandler) AuthHandler(http.ResponseWriter, *http.Request) {}
 
 // LogoutHandler - GET /logout
-func (e VerifyHandler) LogoutHandler(w http.ResponseWriter, r *http.Request) {
+func (e VerifyHandler) LogoutHandler(w http.ResponseWriter, _ *http.Request) {
 	e.TokenService.Reset(w)
 }
 
diff --git a/backend/vendor/github.com/go-pkgz/lcw/.golangci.yml b/backend/vendor/github.com/go-pkgz/lcw/.golangci.yml
index b84ca8d7..1a78e9cf 100644
--- a/backend/vendor/github.com/go-pkgz/lcw/.golangci.yml
+++ b/backend/vendor/github.com/go-pkgz/lcw/.golangci.yml
@@ -26,14 +26,18 @@ linters:
     - revive
     - govet
     - unconvert
+    - megacheck
+    - structcheck
     - gas
     - gocyclo
     - dupl
     - misspell
     - unparam
-    - unused
+    - varcheck
+    - deadcode
     - typecheck
     - ineffassign
+    - varcheck
     - stylecheck
     - gochecknoinits
     - exportloopref
diff --git a/backend/vendor/github.com/go-pkgz/lgr/.golangci.yml b/backend/vendor/github.com/go-pkgz/lgr/.golangci.yml
index 23fd915e..c0e04d0c 100644
--- a/backend/vendor/github.com/go-pkgz/lgr/.golangci.yml
+++ b/backend/vendor/github.com/go-pkgz/lgr/.golangci.yml
@@ -28,24 +28,21 @@ linters-settings:
 linters:
   enable:
     - megacheck
-    - golint
+    - revive
     - govet
     - unconvert
     - megacheck
-    - structcheck
     - gas
     - gocyclo
     - dupl
     - misspell
     - unparam
-    - varcheck
-    - deadcode
+    - unused
     - typecheck
     - ineffassign
-    - varcheck
     - stylecheck
     - gochecknoinits
-    - scopelint
+    - exportloopref
     - gocritic
     - nakedret
     - gosimple
diff --git a/backend/vendor/github.com/go-pkgz/lgr/LICENSE b/backend/vendor/github.com/go-pkgz/lgr/LICENSE
index c1b684bf..dc0ae1a1 100644
--- a/backend/vendor/github.com/go-pkgz/lgr/LICENSE
+++ b/backend/vendor/github.com/go-pkgz/lgr/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 Umputun
+Copyright (c) 2023 Umputun
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/backend/vendor/github.com/go-pkgz/lgr/logger.go b/backend/vendor/github.com/go-pkgz/lgr/logger.go
index 9ba12d33..37594378 100644
--- a/backend/vendor/github.com/go-pkgz/lgr/logger.go
+++ b/backend/vendor/github.com/go-pkgz/lgr/logger.go
@@ -2,6 +2,7 @@
 // The logger's output can be customized in 2 ways:
 //   - by setting individual formatting flags, i.e. lgr.New(lgr.Msec, lgr.CallerFunc)
 //   - by passing formatting template, i.e. lgr.New(lgr.Format(lgr.Short))
+//
 // Leveled output works for messages based on text prefix, i.e. Logf("INFO some message") means INFO level.
 // Debug and trace levels can be filtered based on lgr.Trace and lgr.Debug options.
 // ERROR, FATAL and PANIC levels send to err as well. FATAL terminate caller application with os.Exit(1)
@@ -51,6 +52,7 @@ var (
 type Logger struct {
 	// set with Option calls
 	stdout, stderr io.Writer // destination writes for out and err
+	sameStream     bool      // stdout and stderr are the same stream
 	dbg            bool      // allows reporting for DEBUG level
 	trace          bool      // allows reporting for TRACE and DEBUG levels
 	callerFile     bool      // reports caller file with line number, i.e. foo/bar.go:89
@@ -128,6 +130,8 @@ func New(options ...Option) *Logger {
 	res.callerOn = strings.Contains(res.format, "{{.Caller") || res.callerFile || res.callerFunc || res.callerPkg
 	res.levelBracesOn = strings.Contains(res.format, "[{{.Level}}]") || res.levelBraces
 
+	res.sameStream = isStreamsSame(res.stdout, res.stderr)
+
 	return &res
 }
 
@@ -140,7 +144,7 @@ func (l *Logger) Logf(format string, args ...interface{}) {
 	l.logf(format, args...)
 }
 
-//nolint gocyclo
+// nolint gocyclo
 func (l *Logger) logf(format string, args ...interface{}) {
 
 	var lv, msg string
@@ -197,7 +201,7 @@ func (l *Logger) logf(format string, args ...interface{}) {
 	// write to err as well for high levels, exit(1) on fatal and panic and dump stack on panic level
 	switch lv {
 	case "ERROR":
-		if l.stderr != l.stdout {
+		if !l.sameStream {
 			_, _ = l.stderr.Write(data)
 		}
 		if l.errorDump {
@@ -210,12 +214,12 @@ func (l *Logger) logf(format string, args ...interface{}) {
 			}
 		}
 	case "FATAL":
-		if l.stderr != l.stdout {
+		if !l.sameStream {
 			_, _ = l.stderr.Write(data)
 		}
 		l.fatal()
 	case "PANIC":
-		if l.stderr != l.stdout {
+		if !l.sameStream {
 			_, _ = l.stderr.Write(data)
 		}
 		_, _ = l.stderr.Write(getDump())
@@ -405,3 +409,21 @@ func getDump() []byte {
 	}
 	return stacktrace[:length]
 }
+
+// isStreamsSame checks if two streams are the same by comparing file which they refer to
+func isStreamsSame(s1, s2 io.Writer) bool {
+	s1File, outOk := s1.(*os.File)
+	s2File, errOk := s2.(*os.File)
+	if outOk && errOk {
+		outStat, err := s1File.Stat()
+		if err != nil {
+			return false
+		}
+		errStat, err := s2File.Stat()
+		if err != nil {
+			return false
+		}
+		return os.SameFile(outStat, errStat)
+	}
+	return s1 == s2
+}
diff --git a/backend/vendor/github.com/go-pkgz/lgr/options.go b/backend/vendor/github.com/go-pkgz/lgr/options.go
index 646d4863..af63b3df 100644
--- a/backend/vendor/github.com/go-pkgz/lgr/options.go
+++ b/backend/vendor/github.com/go-pkgz/lgr/options.go
@@ -5,7 +5,7 @@ import "io"
 // Option func type
 type Option func(l *Logger)
 
-// Out sets out writer, stdout by default
+// Out sets output writer, stdout by default
 func Out(w io.Writer) Option {
 	return func(l *Logger) {
 		l.stdout = w
diff --git a/backend/vendor/github.com/golang/snappy/AUTHORS b/backend/vendor/github.com/golang/snappy/AUTHORS
index 52ccb5a9..bcfa1952 100644
--- a/backend/vendor/github.com/golang/snappy/AUTHORS
+++ b/backend/vendor/github.com/golang/snappy/AUTHORS
@@ -8,11 +8,8 @@
 
 # Please keep the list sorted.
 
-Amazon.com, Inc
 Damian Gryski 
-Eric Buth 
 Google Inc.
 Jan Mercl <0xjnml@gmail.com>
-Klaus Post 
 Rodolfo Carvalho 
 Sebastien Binet 
diff --git a/backend/vendor/github.com/golang/snappy/CONTRIBUTORS b/backend/vendor/github.com/golang/snappy/CONTRIBUTORS
index ea6524dd..931ae316 100644
--- a/backend/vendor/github.com/golang/snappy/CONTRIBUTORS
+++ b/backend/vendor/github.com/golang/snappy/CONTRIBUTORS
@@ -26,13 +26,9 @@
 
 # Please keep the list sorted.
 
-Alex Legg 
 Damian Gryski 
-Eric Buth 
 Jan Mercl <0xjnml@gmail.com>
-Jonathan Swinney 
 Kai Backman 
-Klaus Post 
 Marc-Antoine Ruel 
 Nigel Tao 
 Rob Pike 
diff --git a/backend/vendor/github.com/golang/snappy/decode.go b/backend/vendor/github.com/golang/snappy/decode.go
index 23c6e26c..72efb035 100644
--- a/backend/vendor/github.com/golang/snappy/decode.go
+++ b/backend/vendor/github.com/golang/snappy/decode.go
@@ -52,8 +52,6 @@ const (
 // Otherwise, a newly allocated slice will be returned.
 //
 // The dst and src must not overlap. It is valid to pass a nil dst.
-//
-// Decode handles the Snappy block format, not the Snappy stream format.
 func Decode(dst, src []byte) ([]byte, error) {
 	dLen, s, err := decodedLen(src)
 	if err != nil {
@@ -85,8 +83,6 @@ func NewReader(r io.Reader) *Reader {
 }
 
 // Reader is an io.Reader that can read Snappy-compressed bytes.
-//
-// Reader handles the Snappy stream format, not the Snappy block format.
 type Reader struct {
 	r       io.Reader
 	err     error
@@ -118,23 +114,32 @@ func (r *Reader) readFull(p []byte, allowEOF bool) (ok bool) {
 	return true
 }
 
-func (r *Reader) fill() error {
-	for r.i >= r.j {
+// Read satisfies the io.Reader interface.
+func (r *Reader) Read(p []byte) (int, error) {
+	if r.err != nil {
+		return 0, r.err
+	}
+	for {
+		if r.i < r.j {
+			n := copy(p, r.decoded[r.i:r.j])
+			r.i += n
+			return n, nil
+		}
 		if !r.readFull(r.buf[:4], true) {
-			return r.err
+			return 0, r.err
 		}
 		chunkType := r.buf[0]
 		if !r.readHeader {
 			if chunkType != chunkTypeStreamIdentifier {
 				r.err = ErrCorrupt
-				return r.err
+				return 0, r.err
 			}
 			r.readHeader = true
 		}
 		chunkLen := int(r.buf[1]) | int(r.buf[2])<<8 | int(r.buf[3])<<16
 		if chunkLen > len(r.buf) {
 			r.err = ErrUnsupported
-			return r.err
+			return 0, r.err
 		}
 
 		// The chunk types are specified at
@@ -144,11 +149,11 @@ func (r *Reader) fill() error {
 			// Section 4.2. Compressed data (chunk type 0x00).
 			if chunkLen < checksumSize {
 				r.err = ErrCorrupt
-				return r.err
+				return 0, r.err
 			}
 			buf := r.buf[:chunkLen]
 			if !r.readFull(buf, false) {
-				return r.err
+				return 0, r.err
 			}
 			checksum := uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24
 			buf = buf[checksumSize:]
@@ -156,19 +161,19 @@ func (r *Reader) fill() error {
 			n, err := DecodedLen(buf)
 			if err != nil {
 				r.err = err
-				return r.err
+				return 0, r.err
 			}
 			if n > len(r.decoded) {
 				r.err = ErrCorrupt
-				return r.err
+				return 0, r.err
 			}
 			if _, err := Decode(r.decoded, buf); err != nil {
 				r.err = err
-				return r.err
+				return 0, r.err
 			}
 			if crc(r.decoded[:n]) != checksum {
 				r.err = ErrCorrupt
-				return r.err
+				return 0, r.err
 			}
 			r.i, r.j = 0, n
 			continue
@@ -177,25 +182,25 @@ func (r *Reader) fill() error {
 			// Section 4.3. Uncompressed data (chunk type 0x01).
 			if chunkLen < checksumSize {
 				r.err = ErrCorrupt
-				return r.err
+				return 0, r.err
 			}
 			buf := r.buf[:checksumSize]
 			if !r.readFull(buf, false) {
-				return r.err
+				return 0, r.err
 			}
 			checksum := uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24
 			// Read directly into r.decoded instead of via r.buf.
 			n := chunkLen - checksumSize
 			if n > len(r.decoded) {
 				r.err = ErrCorrupt
-				return r.err
+				return 0, r.err
 			}
 			if !r.readFull(r.decoded[:n], false) {
-				return r.err
+				return 0, r.err
 			}
 			if crc(r.decoded[:n]) != checksum {
 				r.err = ErrCorrupt
-				return r.err
+				return 0, r.err
 			}
 			r.i, r.j = 0, n
 			continue
@@ -204,15 +209,15 @@ func (r *Reader) fill() error {
 			// Section 4.1. Stream identifier (chunk type 0xff).
 			if chunkLen != len(magicBody) {
 				r.err = ErrCorrupt
-				return r.err
+				return 0, r.err
 			}
 			if !r.readFull(r.buf[:len(magicBody)], false) {
-				return r.err
+				return 0, r.err
 			}
 			for i := 0; i < len(magicBody); i++ {
 				if r.buf[i] != magicBody[i] {
 					r.err = ErrCorrupt
-					return r.err
+					return 0, r.err
 				}
 			}
 			continue
@@ -221,44 +226,12 @@ func (r *Reader) fill() error {
 		if chunkType <= 0x7f {
 			// Section 4.5. Reserved unskippable chunks (chunk types 0x02-0x7f).
 			r.err = ErrUnsupported
-			return r.err
+			return 0, r.err
 		}
 		// Section 4.4 Padding (chunk type 0xfe).
 		// Section 4.6. Reserved skippable chunks (chunk types 0x80-0xfd).
 		if !r.readFull(r.buf[:chunkLen], false) {
-			return r.err
+			return 0, r.err
 		}
 	}
-
-	return nil
-}
-
-// Read satisfies the io.Reader interface.
-func (r *Reader) Read(p []byte) (int, error) {
-	if r.err != nil {
-		return 0, r.err
-	}
-
-	if err := r.fill(); err != nil {
-		return 0, err
-	}
-
-	n := copy(p, r.decoded[r.i:r.j])
-	r.i += n
-	return n, nil
-}
-
-// ReadByte satisfies the io.ByteReader interface.
-func (r *Reader) ReadByte() (byte, error) {
-	if r.err != nil {
-		return 0, r.err
-	}
-
-	if err := r.fill(); err != nil {
-		return 0, err
-	}
-
-	c := r.decoded[r.i]
-	r.i++
-	return c, nil
 }
diff --git a/backend/vendor/github.com/golang/snappy/decode_asm.go b/backend/vendor/github.com/golang/snappy/decode_amd64.go
similarity index 93%
rename from backend/vendor/github.com/golang/snappy/decode_asm.go
rename to backend/vendor/github.com/golang/snappy/decode_amd64.go
index 7082b349..fcd192b8 100644
--- a/backend/vendor/github.com/golang/snappy/decode_asm.go
+++ b/backend/vendor/github.com/golang/snappy/decode_amd64.go
@@ -5,7 +5,6 @@
 // +build !appengine
 // +build gc
 // +build !noasm
-// +build amd64 arm64
 
 package snappy
 
diff --git a/backend/vendor/github.com/golang/snappy/decode_arm64.s b/backend/vendor/github.com/golang/snappy/decode_arm64.s
deleted file mode 100644
index 7a3ead17..00000000
--- a/backend/vendor/github.com/golang/snappy/decode_arm64.s
+++ /dev/null
@@ -1,494 +0,0 @@
-// Copyright 2020 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !appengine
-// +build gc
-// +build !noasm
-
-#include "textflag.h"
-
-// The asm code generally follows the pure Go code in decode_other.go, except
-// where marked with a "!!!".
-
-// func decode(dst, src []byte) int
-//
-// All local variables fit into registers. The non-zero stack size is only to
-// spill registers and push args when issuing a CALL. The register allocation:
-//	- R2	scratch
-//	- R3	scratch
-//	- R4	length or x
-//	- R5	offset
-//	- R6	&src[s]
-//	- R7	&dst[d]
-//	+ R8	dst_base
-//	+ R9	dst_len
-//	+ R10	dst_base + dst_len
-//	+ R11	src_base
-//	+ R12	src_len
-//	+ R13	src_base + src_len
-//	- R14	used by doCopy
-//	- R15	used by doCopy
-//
-// The registers R8-R13 (marked with a "+") are set at the start of the
-// function, and after a CALL returns, and are not otherwise modified.
-//
-// The d variable is implicitly R7 - R8,  and len(dst)-d is R10 - R7.
-// The s variable is implicitly R6 - R11, and len(src)-s is R13 - R6.
-TEXT ·decode(SB), NOSPLIT, $56-56
-	// Initialize R6, R7 and R8-R13.
-	MOVD dst_base+0(FP), R8
-	MOVD dst_len+8(FP), R9
-	MOVD R8, R7
-	MOVD R8, R10
-	ADD  R9, R10, R10
-	MOVD src_base+24(FP), R11
-	MOVD src_len+32(FP), R12
-	MOVD R11, R6
-	MOVD R11, R13
-	ADD  R12, R13, R13
-
-loop:
-	// for s < len(src)
-	CMP R13, R6
-	BEQ end
-
-	// R4 = uint32(src[s])
-	//
-	// switch src[s] & 0x03
-	MOVBU (R6), R4
-	MOVW  R4, R3
-	ANDW  $3, R3
-	MOVW  $1, R1
-	CMPW  R1, R3
-	BGE   tagCopy
-
-	// ----------------------------------------
-	// The code below handles literal tags.
-
-	// case tagLiteral:
-	// x := uint32(src[s] >> 2)
-	// switch
-	MOVW $60, R1
-	LSRW $2, R4, R4
-	CMPW R4, R1
-	BLS  tagLit60Plus
-
-	// case x < 60:
-	// s++
-	ADD $1, R6, R6
-
-doLit:
-	// This is the end of the inner "switch", when we have a literal tag.
-	//
-	// We assume that R4 == x and x fits in a uint32, where x is the variable
-	// used in the pure Go decode_other.go code.
-
-	// length = int(x) + 1
-	//
-	// Unlike the pure Go code, we don't need to check if length <= 0 because
-	// R4 can hold 64 bits, so the increment cannot overflow.
-	ADD $1, R4, R4
-
-	// Prepare to check if copying length bytes will run past the end of dst or
-	// src.
-	//
-	// R2 = len(dst) - d
-	// R3 = len(src) - s
-	MOVD R10, R2
-	SUB  R7, R2, R2
-	MOVD R13, R3
-	SUB  R6, R3, R3
-
-	// !!! Try a faster technique for short (16 or fewer bytes) copies.
-	//
-	// if length > 16 || len(dst)-d < 16 || len(src)-s < 16 {
-	//   goto callMemmove // Fall back on calling runtime·memmove.
-	// }
-	//
-	// The C++ snappy code calls this TryFastAppend. It also checks len(src)-s
-	// against 21 instead of 16, because it cannot assume that all of its input
-	// is contiguous in memory and so it needs to leave enough source bytes to
-	// read the next tag without refilling buffers, but Go's Decode assumes
-	// contiguousness (the src argument is a []byte).
-	CMP $16, R4
-	BGT callMemmove
-	CMP $16, R2
-	BLT callMemmove
-	CMP $16, R3
-	BLT callMemmove
-
-	// !!! Implement the copy from src to dst as a 16-byte load and store.
-	// (Decode's documentation says that dst and src must not overlap.)
-	//
-	// This always copies 16 bytes, instead of only length bytes, but that's
-	// OK. If the input is a valid Snappy encoding then subsequent iterations
-	// will fix up the overrun. Otherwise, Decode returns a nil []byte (and a
-	// non-nil error), so the overrun will be ignored.
-	//
-	// Note that on arm64, it is legal and cheap to issue unaligned 8-byte or
-	// 16-byte loads and stores. This technique probably wouldn't be as
-	// effective on architectures that are fussier about alignment.
-	LDP 0(R6), (R14, R15)
-	STP (R14, R15), 0(R7)
-
-	// d += length
-	// s += length
-	ADD R4, R7, R7
-	ADD R4, R6, R6
-	B   loop
-
-callMemmove:
-	// if length > len(dst)-d || length > len(src)-s { etc }
-	CMP R2, R4
-	BGT errCorrupt
-	CMP R3, R4
-	BGT errCorrupt
-
-	// copy(dst[d:], src[s:s+length])
-	//
-	// This means calling runtime·memmove(&dst[d], &src[s], length), so we push
-	// R7, R6 and R4 as arguments. Coincidentally, we also need to spill those
-	// three registers to the stack, to save local variables across the CALL.
-	MOVD R7, 8(RSP)
-	MOVD R6, 16(RSP)
-	MOVD R4, 24(RSP)
-	MOVD R7, 32(RSP)
-	MOVD R6, 40(RSP)
-	MOVD R4, 48(RSP)
-	CALL runtime·memmove(SB)
-
-	// Restore local variables: unspill registers from the stack and
-	// re-calculate R8-R13.
-	MOVD 32(RSP), R7
-	MOVD 40(RSP), R6
-	MOVD 48(RSP), R4
-	MOVD dst_base+0(FP), R8
-	MOVD dst_len+8(FP), R9
-	MOVD R8, R10
-	ADD  R9, R10, R10
-	MOVD src_base+24(FP), R11
-	MOVD src_len+32(FP), R12
-	MOVD R11, R13
-	ADD  R12, R13, R13
-
-	// d += length
-	// s += length
-	ADD R4, R7, R7
-	ADD R4, R6, R6
-	B   loop
-
-tagLit60Plus:
-	// !!! This fragment does the
-	//
-	// s += x - 58; if uint(s) > uint(len(src)) { etc }
-	//
-	// checks. In the asm version, we code it once instead of once per switch case.
-	ADD  R4, R6, R6
-	SUB  $58, R6, R6
-	MOVD R6, R3
-	SUB  R11, R3, R3
-	CMP  R12, R3
-	BGT  errCorrupt
-
-	// case x == 60:
-	MOVW $61, R1
-	CMPW R1, R4
-	BEQ  tagLit61
-	BGT  tagLit62Plus
-
-	// x = uint32(src[s-1])
-	MOVBU -1(R6), R4
-	B     doLit
-
-tagLit61:
-	// case x == 61:
-	// x = uint32(src[s-2]) | uint32(src[s-1])<<8
-	MOVHU -2(R6), R4
-	B     doLit
-
-tagLit62Plus:
-	CMPW $62, R4
-	BHI  tagLit63
-
-	// case x == 62:
-	// x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16
-	MOVHU -3(R6), R4
-	MOVBU -1(R6), R3
-	ORR   R3<<16, R4
-	B     doLit
-
-tagLit63:
-	// case x == 63:
-	// x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24
-	MOVWU -4(R6), R4
-	B     doLit
-
-	// The code above handles literal tags.
-	// ----------------------------------------
-	// The code below handles copy tags.
-
-tagCopy4:
-	// case tagCopy4:
-	// s += 5
-	ADD $5, R6, R6
-
-	// if uint(s) > uint(len(src)) { etc }
-	MOVD R6, R3
-	SUB  R11, R3, R3
-	CMP  R12, R3
-	BGT  errCorrupt
-
-	// length = 1 + int(src[s-5])>>2
-	MOVD $1, R1
-	ADD  R4>>2, R1, R4
-
-	// offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24)
-	MOVWU -4(R6), R5
-	B     doCopy
-
-tagCopy2:
-	// case tagCopy2:
-	// s += 3
-	ADD $3, R6, R6
-
-	// if uint(s) > uint(len(src)) { etc }
-	MOVD R6, R3
-	SUB  R11, R3, R3
-	CMP  R12, R3
-	BGT  errCorrupt
-
-	// length = 1 + int(src[s-3])>>2
-	MOVD $1, R1
-	ADD  R4>>2, R1, R4
-
-	// offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8)
-	MOVHU -2(R6), R5
-	B     doCopy
-
-tagCopy:
-	// We have a copy tag. We assume that:
-	//	- R3 == src[s] & 0x03
-	//	- R4 == src[s]
-	CMP $2, R3
-	BEQ tagCopy2
-	BGT tagCopy4
-
-	// case tagCopy1:
-	// s += 2
-	ADD $2, R6, R6
-
-	// if uint(s) > uint(len(src)) { etc }
-	MOVD R6, R3
-	SUB  R11, R3, R3
-	CMP  R12, R3
-	BGT  errCorrupt
-
-	// offset = int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1]))
-	MOVD  R4, R5
-	AND   $0xe0, R5
-	MOVBU -1(R6), R3
-	ORR   R5<<3, R3, R5
-
-	// length = 4 + int(src[s-2])>>2&0x7
-	MOVD $7, R1
-	AND  R4>>2, R1, R4
-	ADD  $4, R4, R4
-
-doCopy:
-	// This is the end of the outer "switch", when we have a copy tag.
-	//
-	// We assume that:
-	//	- R4 == length && R4 > 0
-	//	- R5 == offset
-
-	// if offset <= 0 { etc }
-	MOVD $0, R1
-	CMP  R1, R5
-	BLE  errCorrupt
-
-	// if d < offset { etc }
-	MOVD R7, R3
-	SUB  R8, R3, R3
-	CMP  R5, R3
-	BLT  errCorrupt
-
-	// if length > len(dst)-d { etc }
-	MOVD R10, R3
-	SUB  R7, R3, R3
-	CMP  R3, R4
-	BGT  errCorrupt
-
-	// forwardCopy(dst[d:d+length], dst[d-offset:]); d += length
-	//
-	// Set:
-	//	- R14 = len(dst)-d
-	//	- R15 = &dst[d-offset]
-	MOVD R10, R14
-	SUB  R7, R14, R14
-	MOVD R7, R15
-	SUB  R5, R15, R15
-
-	// !!! Try a faster technique for short (16 or fewer bytes) forward copies.
-	//
-	// First, try using two 8-byte load/stores, similar to the doLit technique
-	// above. Even if dst[d:d+length] and dst[d-offset:] can overlap, this is
-	// still OK if offset >= 8. Note that this has to be two 8-byte load/stores
-	// and not one 16-byte load/store, and the first store has to be before the
-	// second load, due to the overlap if offset is in the range [8, 16).
-	//
-	// if length > 16 || offset < 8 || len(dst)-d < 16 {
-	//   goto slowForwardCopy
-	// }
-	// copy 16 bytes
-	// d += length
-	CMP  $16, R4
-	BGT  slowForwardCopy
-	CMP  $8, R5
-	BLT  slowForwardCopy
-	CMP  $16, R14
-	BLT  slowForwardCopy
-	MOVD 0(R15), R2
-	MOVD R2, 0(R7)
-	MOVD 8(R15), R3
-	MOVD R3, 8(R7)
-	ADD  R4, R7, R7
-	B    loop
-
-slowForwardCopy:
-	// !!! If the forward copy is longer than 16 bytes, or if offset < 8, we
-	// can still try 8-byte load stores, provided we can overrun up to 10 extra
-	// bytes. As above, the overrun will be fixed up by subsequent iterations
-	// of the outermost loop.
-	//
-	// The C++ snappy code calls this technique IncrementalCopyFastPath. Its
-	// commentary says:
-	//
-	// ----
-	//
-	// The main part of this loop is a simple copy of eight bytes at a time
-	// until we've copied (at least) the requested amount of bytes.  However,
-	// if d and d-offset are less than eight bytes apart (indicating a
-	// repeating pattern of length < 8), we first need to expand the pattern in
-	// order to get the correct results. For instance, if the buffer looks like
-	// this, with the eight-byte  and  patterns marked as
-	// intervals:
-	//
-	//    abxxxxxxxxxxxx
-	//    [------]           d-offset
-	//      [------]         d
-	//
-	// a single eight-byte copy from  to  will repeat the pattern
-	// once, after which we can move  two bytes without moving :
-	//
-	//    ababxxxxxxxxxx
-	//    [------]           d-offset
-	//        [------]       d
-	//
-	// and repeat the exercise until the two no longer overlap.
-	//
-	// This allows us to do very well in the special case of one single byte
-	// repeated many times, without taking a big hit for more general cases.
-	//
-	// The worst case of extra writing past the end of the match occurs when
-	// offset == 1 and length == 1; the last copy will read from byte positions
-	// [0..7] and write to [4..11], whereas it was only supposed to write to
-	// position 1. Thus, ten excess bytes.
-	//
-	// ----
-	//
-	// That "10 byte overrun" worst case is confirmed by Go's
-	// TestSlowForwardCopyOverrun, which also tests the fixUpSlowForwardCopy
-	// and finishSlowForwardCopy algorithm.
-	//
-	// if length > len(dst)-d-10 {
-	//   goto verySlowForwardCopy
-	// }
-	SUB $10, R14, R14
-	CMP R14, R4
-	BGT verySlowForwardCopy
-
-makeOffsetAtLeast8:
-	// !!! As above, expand the pattern so that offset >= 8 and we can use
-	// 8-byte load/stores.
-	//
-	// for offset < 8 {
-	//   copy 8 bytes from dst[d-offset:] to dst[d:]
-	//   length -= offset
-	//   d      += offset
-	//   offset += offset
-	//   // The two previous lines together means that d-offset, and therefore
-	//   // R15, is unchanged.
-	// }
-	CMP  $8, R5
-	BGE  fixUpSlowForwardCopy
-	MOVD (R15), R3
-	MOVD R3, (R7)
-	SUB  R5, R4, R4
-	ADD  R5, R7, R7
-	ADD  R5, R5, R5
-	B    makeOffsetAtLeast8
-
-fixUpSlowForwardCopy:
-	// !!! Add length (which might be negative now) to d (implied by R7 being
-	// &dst[d]) so that d ends up at the right place when we jump back to the
-	// top of the loop. Before we do that, though, we save R7 to R2 so that, if
-	// length is positive, copying the remaining length bytes will write to the
-	// right place.
-	MOVD R7, R2
-	ADD  R4, R7, R7
-
-finishSlowForwardCopy:
-	// !!! Repeat 8-byte load/stores until length <= 0. Ending with a negative
-	// length means that we overrun, but as above, that will be fixed up by
-	// subsequent iterations of the outermost loop.
-	MOVD $0, R1
-	CMP  R1, R4
-	BLE  loop
-	MOVD (R15), R3
-	MOVD R3, (R2)
-	ADD  $8, R15, R15
-	ADD  $8, R2, R2
-	SUB  $8, R4, R4
-	B    finishSlowForwardCopy
-
-verySlowForwardCopy:
-	// verySlowForwardCopy is a simple implementation of forward copy. In C
-	// parlance, this is a do/while loop instead of a while loop, since we know
-	// that length > 0. In Go syntax:
-	//
-	// for {
-	//   dst[d] = dst[d - offset]
-	//   d++
-	//   length--
-	//   if length == 0 {
-	//     break
-	//   }
-	// }
-	MOVB (R15), R3
-	MOVB R3, (R7)
-	ADD  $1, R15, R15
-	ADD  $1, R7, R7
-	SUB  $1, R4, R4
-	CBNZ R4, verySlowForwardCopy
-	B    loop
-
-	// The code above handles copy tags.
-	// ----------------------------------------
-
-end:
-	// This is the end of the "for s < len(src)".
-	//
-	// if d != len(dst) { etc }
-	CMP R10, R7
-	BNE errCorrupt
-
-	// return 0
-	MOVD $0, ret+48(FP)
-	RET
-
-errCorrupt:
-	// return decodeErrCodeCorrupt
-	MOVD $1, R2
-	MOVD R2, ret+48(FP)
-	RET
diff --git a/backend/vendor/github.com/golang/snappy/decode_other.go b/backend/vendor/github.com/golang/snappy/decode_other.go
index 2f672be5..8c9f2049 100644
--- a/backend/vendor/github.com/golang/snappy/decode_other.go
+++ b/backend/vendor/github.com/golang/snappy/decode_other.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !amd64,!arm64 appengine !gc noasm
+// +build !amd64 appengine !gc noasm
 
 package snappy
 
@@ -85,28 +85,14 @@ func decode(dst, src []byte) int {
 		if offset <= 0 || d < offset || length > len(dst)-d {
 			return decodeErrCodeCorrupt
 		}
-		// Copy from an earlier sub-slice of dst to a later sub-slice.
-		// If no overlap, use the built-in copy:
-		if offset >= length {
-			copy(dst[d:d+length], dst[d-offset:])
-			d += length
-			continue
-		}
-
-		// Unlike the built-in copy function, this byte-by-byte copy always runs
+		// Copy from an earlier sub-slice of dst to a later sub-slice. Unlike
+		// the built-in copy function, this byte-by-byte copy always runs
 		// forwards, even if the slices overlap. Conceptually, this is:
 		//
 		// d += forwardCopy(dst[d:d+length], dst[d-offset:])
-		//
-		// We align the slices into a and b and show the compiler they are the same size.
-		// This allows the loop to run without bounds checks.
-		a := dst[d : d+length]
-		b := dst[d-offset:]
-		b = b[:len(a)]
-		for i := range a {
-			a[i] = b[i]
+		for end := d + length; d != end; d++ {
+			dst[d] = dst[d-offset]
 		}
-		d += length
 	}
 	if d != len(dst) {
 		return decodeErrCodeCorrupt
diff --git a/backend/vendor/github.com/golang/snappy/encode.go b/backend/vendor/github.com/golang/snappy/encode.go
index 7f236570..8d393e90 100644
--- a/backend/vendor/github.com/golang/snappy/encode.go
+++ b/backend/vendor/github.com/golang/snappy/encode.go
@@ -15,8 +15,6 @@ import (
 // Otherwise, a newly allocated slice will be returned.
 //
 // The dst and src must not overlap. It is valid to pass a nil dst.
-//
-// Encode handles the Snappy block format, not the Snappy stream format.
 func Encode(dst, src []byte) []byte {
 	if n := MaxEncodedLen(len(src)); n < 0 {
 		panic(ErrTooLarge)
@@ -141,8 +139,6 @@ func NewBufferedWriter(w io.Writer) *Writer {
 }
 
 // Writer is an io.Writer that can write Snappy-compressed bytes.
-//
-// Writer handles the Snappy stream format, not the Snappy block format.
 type Writer struct {
 	w   io.Writer
 	err error
diff --git a/backend/vendor/github.com/golang/snappy/encode_asm.go b/backend/vendor/github.com/golang/snappy/encode_amd64.go
similarity index 97%
rename from backend/vendor/github.com/golang/snappy/encode_asm.go
rename to backend/vendor/github.com/golang/snappy/encode_amd64.go
index 107c1e71..150d91bc 100644
--- a/backend/vendor/github.com/golang/snappy/encode_asm.go
+++ b/backend/vendor/github.com/golang/snappy/encode_amd64.go
@@ -5,7 +5,6 @@
 // +build !appengine
 // +build gc
 // +build !noasm
-// +build amd64 arm64
 
 package snappy
 
diff --git a/backend/vendor/github.com/golang/snappy/encode_arm64.s b/backend/vendor/github.com/golang/snappy/encode_arm64.s
deleted file mode 100644
index f8d54adf..00000000
--- a/backend/vendor/github.com/golang/snappy/encode_arm64.s
+++ /dev/null
@@ -1,722 +0,0 @@
-// Copyright 2020 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !appengine
-// +build gc
-// +build !noasm
-
-#include "textflag.h"
-
-// The asm code generally follows the pure Go code in encode_other.go, except
-// where marked with a "!!!".
-
-// ----------------------------------------------------------------------------
-
-// func emitLiteral(dst, lit []byte) int
-//
-// All local variables fit into registers. The register allocation:
-//	- R3	len(lit)
-//	- R4	n
-//	- R6	return value
-//	- R8	&dst[i]
-//	- R10	&lit[0]
-//
-// The 32 bytes of stack space is to call runtime·memmove.
-//
-// The unusual register allocation of local variables, such as R10 for the
-// source pointer, matches the allocation used at the call site in encodeBlock,
-// which makes it easier to manually inline this function.
-TEXT ·emitLiteral(SB), NOSPLIT, $32-56
-	MOVD dst_base+0(FP), R8
-	MOVD lit_base+24(FP), R10
-	MOVD lit_len+32(FP), R3
-	MOVD R3, R6
-	MOVW R3, R4
-	SUBW $1, R4, R4
-
-	CMPW $60, R4
-	BLT  oneByte
-	CMPW $256, R4
-	BLT  twoBytes
-
-threeBytes:
-	MOVD $0xf4, R2
-	MOVB R2, 0(R8)
-	MOVW R4, 1(R8)
-	ADD  $3, R8, R8
-	ADD  $3, R6, R6
-	B    memmove
-
-twoBytes:
-	MOVD $0xf0, R2
-	MOVB R2, 0(R8)
-	MOVB R4, 1(R8)
-	ADD  $2, R8, R8
-	ADD  $2, R6, R6
-	B    memmove
-
-oneByte:
-	LSLW $2, R4, R4
-	MOVB R4, 0(R8)
-	ADD  $1, R8, R8
-	ADD  $1, R6, R6
-
-memmove:
-	MOVD R6, ret+48(FP)
-
-	// copy(dst[i:], lit)
-	//
-	// This means calling runtime·memmove(&dst[i], &lit[0], len(lit)), so we push
-	// R8, R10 and R3 as arguments.
-	MOVD R8, 8(RSP)
-	MOVD R10, 16(RSP)
-	MOVD R3, 24(RSP)
-	CALL runtime·memmove(SB)
-	RET
-
-// ----------------------------------------------------------------------------
-
-// func emitCopy(dst []byte, offset, length int) int
-//
-// All local variables fit into registers. The register allocation:
-//	- R3	length
-//	- R7	&dst[0]
-//	- R8	&dst[i]
-//	- R11	offset
-//
-// The unusual register allocation of local variables, such as R11 for the
-// offset, matches the allocation used at the call site in encodeBlock, which
-// makes it easier to manually inline this function.
-TEXT ·emitCopy(SB), NOSPLIT, $0-48
-	MOVD dst_base+0(FP), R8
-	MOVD R8, R7
-	MOVD offset+24(FP), R11
-	MOVD length+32(FP), R3
-
-loop0:
-	// for length >= 68 { etc }
-	CMPW $68, R3
-	BLT  step1
-
-	// Emit a length 64 copy, encoded as 3 bytes.
-	MOVD $0xfe, R2
-	MOVB R2, 0(R8)
-	MOVW R11, 1(R8)
-	ADD  $3, R8, R8
-	SUB  $64, R3, R3
-	B    loop0
-
-step1:
-	// if length > 64 { etc }
-	CMP $64, R3
-	BLE step2
-
-	// Emit a length 60 copy, encoded as 3 bytes.
-	MOVD $0xee, R2
-	MOVB R2, 0(R8)
-	MOVW R11, 1(R8)
-	ADD  $3, R8, R8
-	SUB  $60, R3, R3
-
-step2:
-	// if length >= 12 || offset >= 2048 { goto step3 }
-	CMP  $12, R3
-	BGE  step3
-	CMPW $2048, R11
-	BGE  step3
-
-	// Emit the remaining copy, encoded as 2 bytes.
-	MOVB R11, 1(R8)
-	LSRW $3, R11, R11
-	AND  $0xe0, R11, R11
-	SUB  $4, R3, R3
-	LSLW $2, R3
-	AND  $0xff, R3, R3
-	ORRW R3, R11, R11
-	ORRW $1, R11, R11
-	MOVB R11, 0(R8)
-	ADD  $2, R8, R8
-
-	// Return the number of bytes written.
-	SUB  R7, R8, R8
-	MOVD R8, ret+40(FP)
-	RET
-
-step3:
-	// Emit the remaining copy, encoded as 3 bytes.
-	SUB  $1, R3, R3
-	AND  $0xff, R3, R3
-	LSLW $2, R3, R3
-	ORRW $2, R3, R3
-	MOVB R3, 0(R8)
-	MOVW R11, 1(R8)
-	ADD  $3, R8, R8
-
-	// Return the number of bytes written.
-	SUB  R7, R8, R8
-	MOVD R8, ret+40(FP)
-	RET
-
-// ----------------------------------------------------------------------------
-
-// func extendMatch(src []byte, i, j int) int
-//
-// All local variables fit into registers. The register allocation:
-//	- R6	&src[0]
-//	- R7	&src[j]
-//	- R13	&src[len(src) - 8]
-//	- R14	&src[len(src)]
-//	- R15	&src[i]
-//
-// The unusual register allocation of local variables, such as R15 for a source
-// pointer, matches the allocation used at the call site in encodeBlock, which
-// makes it easier to manually inline this function.
-TEXT ·extendMatch(SB), NOSPLIT, $0-48
-	MOVD src_base+0(FP), R6
-	MOVD src_len+8(FP), R14
-	MOVD i+24(FP), R15
-	MOVD j+32(FP), R7
-	ADD  R6, R14, R14
-	ADD  R6, R15, R15
-	ADD  R6, R7, R7
-	MOVD R14, R13
-	SUB  $8, R13, R13
-
-cmp8:
-	// As long as we are 8 or more bytes before the end of src, we can load and
-	// compare 8 bytes at a time. If those 8 bytes are equal, repeat.
-	CMP  R13, R7
-	BHI  cmp1
-	MOVD (R15), R3
-	MOVD (R7), R4
-	CMP  R4, R3
-	BNE  bsf
-	ADD  $8, R15, R15
-	ADD  $8, R7, R7
-	B    cmp8
-
-bsf:
-	// If those 8 bytes were not equal, XOR the two 8 byte values, and return
-	// the index of the first byte that differs.
-	// RBIT reverses the bit order, then CLZ counts the leading zeros, the
-	// combination of which finds the least significant bit which is set.
-	// The arm64 architecture is little-endian, and the shift by 3 converts
-	// a bit index to a byte index.
-	EOR  R3, R4, R4
-	RBIT R4, R4
-	CLZ  R4, R4
-	ADD  R4>>3, R7, R7
-
-	// Convert from &src[ret] to ret.
-	SUB  R6, R7, R7
-	MOVD R7, ret+40(FP)
-	RET
-
-cmp1:
-	// In src's tail, compare 1 byte at a time.
-	CMP  R7, R14
-	BLS  extendMatchEnd
-	MOVB (R15), R3
-	MOVB (R7), R4
-	CMP  R4, R3
-	BNE  extendMatchEnd
-	ADD  $1, R15, R15
-	ADD  $1, R7, R7
-	B    cmp1
-
-extendMatchEnd:
-	// Convert from &src[ret] to ret.
-	SUB  R6, R7, R7
-	MOVD R7, ret+40(FP)
-	RET
-
-// ----------------------------------------------------------------------------
-
-// func encodeBlock(dst, src []byte) (d int)
-//
-// All local variables fit into registers, other than "var table". The register
-// allocation:
-//	- R3	.	.
-//	- R4	.	.
-//	- R5	64	shift
-//	- R6	72	&src[0], tableSize
-//	- R7	80	&src[s]
-//	- R8	88	&dst[d]
-//	- R9	96	sLimit
-//	- R10	.	&src[nextEmit]
-//	- R11	104	prevHash, currHash, nextHash, offset
-//	- R12	112	&src[base], skip
-//	- R13	.	&src[nextS], &src[len(src) - 8]
-//	- R14	.	len(src), bytesBetweenHashLookups, &src[len(src)], x
-//	- R15	120	candidate
-//	- R16	.	hash constant, 0x1e35a7bd
-//	- R17	.	&table
-//	- .  	128	table
-//
-// The second column (64, 72, etc) is the stack offset to spill the registers
-// when calling other functions. We could pack this slightly tighter, but it's
-// simpler to have a dedicated spill map independent of the function called.
-//
-// "var table [maxTableSize]uint16" takes up 32768 bytes of stack space. An
-// extra 64 bytes, to call other functions, and an extra 64 bytes, to spill
-// local variables (registers) during calls gives 32768 + 64 + 64 = 32896.
-TEXT ·encodeBlock(SB), 0, $32896-56
-	MOVD dst_base+0(FP), R8
-	MOVD src_base+24(FP), R7
-	MOVD src_len+32(FP), R14
-
-	// shift, tableSize := uint32(32-8), 1<<8
-	MOVD  $24, R5
-	MOVD  $256, R6
-	MOVW  $0xa7bd, R16
-	MOVKW $(0x1e35<<16), R16
-
-calcShift:
-	// for ; tableSize < maxTableSize && tableSize < len(src); tableSize *= 2 {
-	//	shift--
-	// }
-	MOVD $16384, R2
-	CMP  R2, R6
-	BGE  varTable
-	CMP  R14, R6
-	BGE  varTable
-	SUB  $1, R5, R5
-	LSL  $1, R6, R6
-	B    calcShift
-
-varTable:
-	// var table [maxTableSize]uint16
-	//
-	// In the asm code, unlike the Go code, we can zero-initialize only the
-	// first tableSize elements. Each uint16 element is 2 bytes and each
-	// iterations writes 64 bytes, so we can do only tableSize/32 writes
-	// instead of the 2048 writes that would zero-initialize all of table's
-	// 32768 bytes. This clear could overrun the first tableSize elements, but
-	// it won't overrun the allocated stack size.
-	ADD  $128, RSP, R17
-	MOVD R17, R4
-
-	// !!! R6 = &src[tableSize]
-	ADD R6<<1, R17, R6
-
-memclr:
-	STP.P (ZR, ZR), 64(R4)
-	STP   (ZR, ZR), -48(R4)
-	STP   (ZR, ZR), -32(R4)
-	STP   (ZR, ZR), -16(R4)
-	CMP   R4, R6
-	BHI   memclr
-
-	// !!! R6 = &src[0]
-	MOVD R7, R6
-
-	// sLimit := len(src) - inputMargin
-	MOVD R14, R9
-	SUB  $15, R9, R9
-
-	// !!! Pre-emptively spill R5, R6 and R9 to the stack. Their values don't
-	// change for the rest of the function.
-	MOVD R5, 64(RSP)
-	MOVD R6, 72(RSP)
-	MOVD R9, 96(RSP)
-
-	// nextEmit := 0
-	MOVD R6, R10
-
-	// s := 1
-	ADD $1, R7, R7
-
-	// nextHash := hash(load32(src, s), shift)
-	MOVW 0(R7), R11
-	MULW R16, R11, R11
-	LSRW R5, R11, R11
-
-outer:
-	// for { etc }
-
-	// skip := 32
-	MOVD $32, R12
-
-	// nextS := s
-	MOVD R7, R13
-
-	// candidate := 0
-	MOVD $0, R15
-
-inner0:
-	// for { etc }
-
-	// s := nextS
-	MOVD R13, R7
-
-	// bytesBetweenHashLookups := skip >> 5
-	MOVD R12, R14
-	LSR  $5, R14, R14
-
-	// nextS = s + bytesBetweenHashLookups
-	ADD R14, R13, R13
-
-	// skip += bytesBetweenHashLookups
-	ADD R14, R12, R12
-
-	// if nextS > sLimit { goto emitRemainder }
-	MOVD R13, R3
-	SUB  R6, R3, R3
-	CMP  R9, R3
-	BHI  emitRemainder
-
-	// candidate = int(table[nextHash])
-	MOVHU 0(R17)(R11<<1), R15
-
-	// table[nextHash] = uint16(s)
-	MOVD R7, R3
-	SUB  R6, R3, R3
-
-	MOVH R3, 0(R17)(R11<<1)
-
-	// nextHash = hash(load32(src, nextS), shift)
-	MOVW 0(R13), R11
-	MULW R16, R11
-	LSRW R5, R11, R11
-
-	// if load32(src, s) != load32(src, candidate) { continue } break
-	MOVW 0(R7), R3
-	MOVW (R6)(R15), R4
-	CMPW R4, R3
-	BNE  inner0
-
-fourByteMatch:
-	// As per the encode_other.go code:
-	//
-	// A 4-byte match has been found. We'll later see etc.
-
-	// !!! Jump to a fast path for short (<= 16 byte) literals. See the comment
-	// on inputMargin in encode.go.
-	MOVD R7, R3
-	SUB  R10, R3, R3
-	CMP  $16, R3
-	BLE  emitLiteralFastPath
-
-	// ----------------------------------------
-	// Begin inline of the emitLiteral call.
-	//
-	// d += emitLiteral(dst[d:], src[nextEmit:s])
-
-	MOVW R3, R4
-	SUBW $1, R4, R4
-
-	MOVW $60, R2
-	CMPW R2, R4
-	BLT  inlineEmitLiteralOneByte
-	MOVW $256, R2
-	CMPW R2, R4
-	BLT  inlineEmitLiteralTwoBytes
-
-inlineEmitLiteralThreeBytes:
-	MOVD $0xf4, R1
-	MOVB R1, 0(R8)
-	MOVW R4, 1(R8)
-	ADD  $3, R8, R8
-	B    inlineEmitLiteralMemmove
-
-inlineEmitLiteralTwoBytes:
-	MOVD $0xf0, R1
-	MOVB R1, 0(R8)
-	MOVB R4, 1(R8)
-	ADD  $2, R8, R8
-	B    inlineEmitLiteralMemmove
-
-inlineEmitLiteralOneByte:
-	LSLW $2, R4, R4
-	MOVB R4, 0(R8)
-	ADD  $1, R8, R8
-
-inlineEmitLiteralMemmove:
-	// Spill local variables (registers) onto the stack; call; unspill.
-	//
-	// copy(dst[i:], lit)
-	//
-	// This means calling runtime·memmove(&dst[i], &lit[0], len(lit)), so we push
-	// R8, R10 and R3 as arguments.
-	MOVD R8, 8(RSP)
-	MOVD R10, 16(RSP)
-	MOVD R3, 24(RSP)
-
-	// Finish the "d +=" part of "d += emitLiteral(etc)".
-	ADD   R3, R8, R8
-	MOVD  R7, 80(RSP)
-	MOVD  R8, 88(RSP)
-	MOVD  R15, 120(RSP)
-	CALL  runtime·memmove(SB)
-	MOVD  64(RSP), R5
-	MOVD  72(RSP), R6
-	MOVD  80(RSP), R7
-	MOVD  88(RSP), R8
-	MOVD  96(RSP), R9
-	MOVD  120(RSP), R15
-	ADD   $128, RSP, R17
-	MOVW  $0xa7bd, R16
-	MOVKW $(0x1e35<<16), R16
-	B     inner1
-
-inlineEmitLiteralEnd:
-	// End inline of the emitLiteral call.
-	// ----------------------------------------
-
-emitLiteralFastPath:
-	// !!! Emit the 1-byte encoding "uint8(len(lit)-1)<<2".
-	MOVB R3, R4
-	SUBW $1, R4, R4
-	AND  $0xff, R4, R4
-	LSLW $2, R4, R4
-	MOVB R4, (R8)
-	ADD  $1, R8, R8
-
-	// !!! Implement the copy from lit to dst as a 16-byte load and store.
-	// (Encode's documentation says that dst and src must not overlap.)
-	//
-	// This always copies 16 bytes, instead of only len(lit) bytes, but that's
-	// OK. Subsequent iterations will fix up the overrun.
-	//
-	// Note that on arm64, it is legal and cheap to issue unaligned 8-byte or
-	// 16-byte loads and stores. This technique probably wouldn't be as
-	// effective on architectures that are fussier about alignment.
-	LDP 0(R10), (R0, R1)
-	STP (R0, R1), 0(R8)
-	ADD R3, R8, R8
-
-inner1:
-	// for { etc }
-
-	// base := s
-	MOVD R7, R12
-
-	// !!! offset := base - candidate
-	MOVD R12, R11
-	SUB  R15, R11, R11
-	SUB  R6, R11, R11
-
-	// ----------------------------------------
-	// Begin inline of the extendMatch call.
-	//
-	// s = extendMatch(src, candidate+4, s+4)
-
-	// !!! R14 = &src[len(src)]
-	MOVD src_len+32(FP), R14
-	ADD  R6, R14, R14
-
-	// !!! R13 = &src[len(src) - 8]
-	MOVD R14, R13
-	SUB  $8, R13, R13
-
-	// !!! R15 = &src[candidate + 4]
-	ADD $4, R15, R15
-	ADD R6, R15, R15
-
-	// !!! s += 4
-	ADD $4, R7, R7
-
-inlineExtendMatchCmp8:
-	// As long as we are 8 or more bytes before the end of src, we can load and
-	// compare 8 bytes at a time. If those 8 bytes are equal, repeat.
-	CMP  R13, R7
-	BHI  inlineExtendMatchCmp1
-	MOVD (R15), R3
-	MOVD (R7), R4
-	CMP  R4, R3
-	BNE  inlineExtendMatchBSF
-	ADD  $8, R15, R15
-	ADD  $8, R7, R7
-	B    inlineExtendMatchCmp8
-
-inlineExtendMatchBSF:
-	// If those 8 bytes were not equal, XOR the two 8 byte values, and return
-	// the index of the first byte that differs.
-	// RBIT reverses the bit order, then CLZ counts the leading zeros, the
-	// combination of which finds the least significant bit which is set.
-	// The arm64 architecture is little-endian, and the shift by 3 converts
-	// a bit index to a byte index.
-	EOR  R3, R4, R4
-	RBIT R4, R4
-	CLZ  R4, R4
-	ADD  R4>>3, R7, R7
-	B    inlineExtendMatchEnd
-
-inlineExtendMatchCmp1:
-	// In src's tail, compare 1 byte at a time.
-	CMP  R7, R14
-	BLS  inlineExtendMatchEnd
-	MOVB (R15), R3
-	MOVB (R7), R4
-	CMP  R4, R3
-	BNE  inlineExtendMatchEnd
-	ADD  $1, R15, R15
-	ADD  $1, R7, R7
-	B    inlineExtendMatchCmp1
-
-inlineExtendMatchEnd:
-	// End inline of the extendMatch call.
-	// ----------------------------------------
-
-	// ----------------------------------------
-	// Begin inline of the emitCopy call.
-	//
-	// d += emitCopy(dst[d:], base-candidate, s-base)
-
-	// !!! length := s - base
-	MOVD R7, R3
-	SUB  R12, R3, R3
-
-inlineEmitCopyLoop0:
-	// for length >= 68 { etc }
-	MOVW $68, R2
-	CMPW R2, R3
-	BLT  inlineEmitCopyStep1
-
-	// Emit a length 64 copy, encoded as 3 bytes.
-	MOVD $0xfe, R1
-	MOVB R1, 0(R8)
-	MOVW R11, 1(R8)
-	ADD  $3, R8, R8
-	SUBW $64, R3, R3
-	B    inlineEmitCopyLoop0
-
-inlineEmitCopyStep1:
-	// if length > 64 { etc }
-	MOVW $64, R2
-	CMPW R2, R3
-	BLE  inlineEmitCopyStep2
-
-	// Emit a length 60 copy, encoded as 3 bytes.
-	MOVD $0xee, R1
-	MOVB R1, 0(R8)
-	MOVW R11, 1(R8)
-	ADD  $3, R8, R8
-	SUBW $60, R3, R3
-
-inlineEmitCopyStep2:
-	// if length >= 12 || offset >= 2048 { goto inlineEmitCopyStep3 }
-	MOVW $12, R2
-	CMPW R2, R3
-	BGE  inlineEmitCopyStep3
-	MOVW $2048, R2
-	CMPW R2, R11
-	BGE  inlineEmitCopyStep3
-
-	// Emit the remaining copy, encoded as 2 bytes.
-	MOVB R11, 1(R8)
-	LSRW $8, R11, R11
-	LSLW $5, R11, R11
-	SUBW $4, R3, R3
-	AND  $0xff, R3, R3
-	LSLW $2, R3, R3
-	ORRW R3, R11, R11
-	ORRW $1, R11, R11
-	MOVB R11, 0(R8)
-	ADD  $2, R8, R8
-	B    inlineEmitCopyEnd
-
-inlineEmitCopyStep3:
-	// Emit the remaining copy, encoded as 3 bytes.
-	SUBW $1, R3, R3
-	LSLW $2, R3, R3
-	ORRW $2, R3, R3
-	MOVB R3, 0(R8)
-	MOVW R11, 1(R8)
-	ADD  $3, R8, R8
-
-inlineEmitCopyEnd:
-	// End inline of the emitCopy call.
-	// ----------------------------------------
-
-	// nextEmit = s
-	MOVD R7, R10
-
-	// if s >= sLimit { goto emitRemainder }
-	MOVD R7, R3
-	SUB  R6, R3, R3
-	CMP  R3, R9
-	BLS  emitRemainder
-
-	// As per the encode_other.go code:
-	//
-	// We could immediately etc.
-
-	// x := load64(src, s-1)
-	MOVD -1(R7), R14
-
-	// prevHash := hash(uint32(x>>0), shift)
-	MOVW R14, R11
-	MULW R16, R11, R11
-	LSRW R5, R11, R11
-
-	// table[prevHash] = uint16(s-1)
-	MOVD R7, R3
-	SUB  R6, R3, R3
-	SUB  $1, R3, R3
-
-	MOVHU R3, 0(R17)(R11<<1)
-
-	// currHash := hash(uint32(x>>8), shift)
-	LSR  $8, R14, R14
-	MOVW R14, R11
-	MULW R16, R11, R11
-	LSRW R5, R11, R11
-
-	// candidate = int(table[currHash])
-	MOVHU 0(R17)(R11<<1), R15
-
-	// table[currHash] = uint16(s)
-	ADD   $1, R3, R3
-	MOVHU R3, 0(R17)(R11<<1)
-
-	// if uint32(x>>8) == load32(src, candidate) { continue }
-	MOVW (R6)(R15), R4
-	CMPW R4, R14
-	BEQ  inner1
-
-	// nextHash = hash(uint32(x>>16), shift)
-	LSR  $8, R14, R14
-	MOVW R14, R11
-	MULW R16, R11, R11
-	LSRW R5, R11, R11
-
-	// s++
-	ADD $1, R7, R7
-
-	// break out of the inner1 for loop, i.e. continue the outer loop.
-	B outer
-
-emitRemainder:
-	// if nextEmit < len(src) { etc }
-	MOVD src_len+32(FP), R3
-	ADD  R6, R3, R3
-	CMP  R3, R10
-	BEQ  encodeBlockEnd
-
-	// d += emitLiteral(dst[d:], src[nextEmit:])
-	//
-	// Push args.
-	MOVD R8, 8(RSP)
-	MOVD $0, 16(RSP)  // Unnecessary, as the callee ignores it, but conservative.
-	MOVD $0, 24(RSP)  // Unnecessary, as the callee ignores it, but conservative.
-	MOVD R10, 32(RSP)
-	SUB  R10, R3, R3
-	MOVD R3, 40(RSP)
-	MOVD R3, 48(RSP)  // Unnecessary, as the callee ignores it, but conservative.
-
-	// Spill local variables (registers) onto the stack; call; unspill.
-	MOVD R8, 88(RSP)
-	CALL ·emitLiteral(SB)
-	MOVD 88(RSP), R8
-
-	// Finish the "d +=" part of "d += emitLiteral(etc)".
-	MOVD 56(RSP), R1
-	ADD  R1, R8, R8
-
-encodeBlockEnd:
-	MOVD dst_base+0(FP), R3
-	SUB  R3, R8, R8
-	MOVD R8, d+48(FP)
-	RET
diff --git a/backend/vendor/github.com/golang/snappy/encode_other.go b/backend/vendor/github.com/golang/snappy/encode_other.go
index 296d7f0b..dbcae905 100644
--- a/backend/vendor/github.com/golang/snappy/encode_other.go
+++ b/backend/vendor/github.com/golang/snappy/encode_other.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !amd64,!arm64 appengine !gc noasm
+// +build !amd64 appengine !gc noasm
 
 package snappy
 
diff --git a/backend/vendor/github.com/gorilla/websocket/README.md b/backend/vendor/github.com/gorilla/websocket/README.md
index 2517a287..19aa2e75 100644
--- a/backend/vendor/github.com/gorilla/websocket/README.md
+++ b/backend/vendor/github.com/gorilla/websocket/README.md
@@ -6,13 +6,6 @@
 Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
 [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
 
-
----
-
-⚠️ **[The Gorilla WebSocket Package is looking for a new maintainer](https://github.com/gorilla/websocket/issues/370)**
-
----
-
 ### Documentation
 
 * [API Reference](https://pkg.go.dev/github.com/gorilla/websocket?tab=doc)
@@ -37,3 +30,35 @@ The Gorilla WebSocket package passes the server tests in the [Autobahn Test
 Suite](https://github.com/crossbario/autobahn-testsuite) using the application in the [examples/autobahn
 subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
 
+### Gorilla WebSocket compared with other packages
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
github.com/gorillagolang.org/x/net
RFC 6455 Features
Passes Autobahn Test SuiteYesNo
Receive fragmented messageYesNo, see note 1
Send close messageYesNo
Send pings and receive pongsYesNo
Get the type of a received data messageYesYes, see note 2
Other Features
Compression ExtensionsExperimentalNo
Read message using io.ReaderYesNo, see note 3
Write message using io.WriteCloserYesNo, see note 3

+
+Notes:
+
+1. Large messages are fragmented in [Chrome's new WebSocket implementation](http://www.ietf.org/mail-archive/web/hybi/current/msg10503.html).
+2. The application can get the type of a received data message by implementing
+   a [Codec marshal](http://godoc.org/golang.org/x/net/websocket#Codec.Marshal)
+   function.
+3. The go.net io.Reader and io.Writer operate across WebSocket frame boundaries.
+  Read returns when the input buffer is full or a frame boundary is
+  encountered. Each call to Write sends a single frame message. The Gorilla
+  io.Reader and io.WriteCloser operate on a single WebSocket message.
+
diff --git a/backend/vendor/github.com/gorilla/websocket/client.go b/backend/vendor/github.com/gorilla/websocket/client.go
index 2efd8355..962c06a3 100644
--- a/backend/vendor/github.com/gorilla/websocket/client.go
+++ b/backend/vendor/github.com/gorilla/websocket/client.go
@@ -48,23 +48,15 @@ func NewClient(netConn net.Conn, u *url.URL, requestHeader http.Header, readBufS
 }
 
 // A Dialer contains options for connecting to WebSocket server.
-//
-// It is safe to call Dialer's methods concurrently.
 type Dialer struct {
 	// NetDial specifies the dial function for creating TCP connections. If
 	// NetDial is nil, net.Dial is used.
 	NetDial func(network, addr string) (net.Conn, error)
 
 	// NetDialContext specifies the dial function for creating TCP connections. If
-	// NetDialContext is nil, NetDial is used.
+	// NetDialContext is nil, net.DialContext is used.
 	NetDialContext func(ctx context.Context, network, addr string) (net.Conn, error)
 
-	// NetDialTLSContext specifies the dial function for creating TLS/TCP connections. If
-	// NetDialTLSContext is nil, NetDialContext is used.
-	// If NetDialTLSContext is set, Dial assumes the TLS handshake is done there and
-	// TLSClientConfig is ignored.
-	NetDialTLSContext func(ctx context.Context, network, addr string) (net.Conn, error)
-
 	// Proxy specifies a function to return a proxy for a given
 	// Request. If the function returns a non-nil error, the
 	// request is aborted with the provided error.
@@ -73,8 +65,6 @@ type Dialer struct {
 
 	// TLSClientConfig specifies the TLS configuration to use with tls.Client.
 	// If nil, the default configuration is used.
-	// If either NetDialTLS or NetDialTLSContext are set, Dial assumes the TLS handshake
-	// is done there and TLSClientConfig is ignored.
 	TLSClientConfig *tls.Config
 
 	// HandshakeTimeout specifies the duration for the handshake to complete.
@@ -186,7 +176,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 	}
 
 	req := &http.Request{
-		Method:     http.MethodGet,
+		Method:     "GET",
 		URL:        u,
 		Proto:      "HTTP/1.1",
 		ProtoMajor: 1,
@@ -247,32 +237,13 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 	// Get network dial function.
 	var netDial func(network, add string) (net.Conn, error)
 
-	switch u.Scheme {
-	case "http":
-		if d.NetDialContext != nil {
-			netDial = func(network, addr string) (net.Conn, error) {
-				return d.NetDialContext(ctx, network, addr)
-			}
-		} else if d.NetDial != nil {
-			netDial = d.NetDial
+	if d.NetDialContext != nil {
+		netDial = func(network, addr string) (net.Conn, error) {
+			return d.NetDialContext(ctx, network, addr)
 		}
-	case "https":
-		if d.NetDialTLSContext != nil {
-			netDial = func(network, addr string) (net.Conn, error) {
-				return d.NetDialTLSContext(ctx, network, addr)
-			}
-		} else if d.NetDialContext != nil {
-			netDial = func(network, addr string) (net.Conn, error) {
-				return d.NetDialContext(ctx, network, addr)
-			}
-		} else if d.NetDial != nil {
-			netDial = d.NetDial
-		}
-	default:
-		return nil, nil, errMalformedURL
-	}
-
-	if netDial == nil {
+	} else if d.NetDial != nil {
+		netDial = d.NetDial
+	} else {
 		netDialer := &net.Dialer{}
 		netDial = func(network, addr string) (net.Conn, error) {
 			return netDialer.DialContext(ctx, network, addr)
@@ -333,9 +304,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 		}
 	}()
 
-	if u.Scheme == "https" && d.NetDialTLSContext == nil {
-		// If NetDialTLSContext is set, assume that the TLS handshake has already been done
-
+	if u.Scheme == "https" {
 		cfg := cloneTLSConfig(d.TLSClientConfig)
 		if cfg.ServerName == "" {
 			cfg.ServerName = hostNoPort
@@ -343,12 +312,11 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 		tlsConn := tls.Client(netConn, cfg)
 		netConn = tlsConn
 
-		if trace != nil && trace.TLSHandshakeStart != nil {
-			trace.TLSHandshakeStart()
-		}
-		err := doHandshake(ctx, tlsConn, cfg)
-		if trace != nil && trace.TLSHandshakeDone != nil {
-			trace.TLSHandshakeDone(tlsConn.ConnectionState(), err)
+		var err error
+		if trace != nil {
+			err = doHandshakeWithTrace(trace, tlsConn, cfg)
+		} else {
+			err = doHandshake(tlsConn, cfg)
 		}
 
 		if err != nil {
@@ -380,8 +348,8 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 	}
 
 	if resp.StatusCode != 101 ||
-		!tokenListContainsValue(resp.Header, "Upgrade", "websocket") ||
-		!tokenListContainsValue(resp.Header, "Connection", "upgrade") ||
+		!strings.EqualFold(resp.Header.Get("Upgrade"), "websocket") ||
+		!strings.EqualFold(resp.Header.Get("Connection"), "upgrade") ||
 		resp.Header.Get("Sec-Websocket-Accept") != computeAcceptKey(challengeKey) {
 		// Before closing the network connection on return from this
 		// function, slurp up some of the response to aid application
@@ -414,9 +382,14 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 	return conn, resp, nil
 }
 
-func cloneTLSConfig(cfg *tls.Config) *tls.Config {
-	if cfg == nil {
-		return &tls.Config{}
+func doHandshake(tlsConn *tls.Conn, cfg *tls.Config) error {
+	if err := tlsConn.Handshake(); err != nil {
+		return err
 	}
-	return cfg.Clone()
+	if !cfg.InsecureSkipVerify {
+		if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
+			return err
+		}
+	}
+	return nil
 }
diff --git a/backend/vendor/github.com/gorilla/websocket/client_clone.go b/backend/vendor/github.com/gorilla/websocket/client_clone.go
new file mode 100644
index 00000000..4f0d9437
--- /dev/null
+++ b/backend/vendor/github.com/gorilla/websocket/client_clone.go
@@ -0,0 +1,16 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.8
+
+package websocket
+
+import "crypto/tls"
+
+func cloneTLSConfig(cfg *tls.Config) *tls.Config {
+	if cfg == nil {
+		return &tls.Config{}
+	}
+	return cfg.Clone()
+}
diff --git a/backend/vendor/github.com/gorilla/websocket/client_clone_legacy.go b/backend/vendor/github.com/gorilla/websocket/client_clone_legacy.go
new file mode 100644
index 00000000..babb007f
--- /dev/null
+++ b/backend/vendor/github.com/gorilla/websocket/client_clone_legacy.go
@@ -0,0 +1,38 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.8
+
+package websocket
+
+import "crypto/tls"
+
+// cloneTLSConfig clones all public fields except the fields
+// SessionTicketsDisabled and SessionTicketKey. This avoids copying the
+// sync.Mutex in the sync.Once and makes it safe to call cloneTLSConfig on a
+// config in active use.
+func cloneTLSConfig(cfg *tls.Config) *tls.Config {
+	if cfg == nil {
+		return &tls.Config{}
+	}
+	return &tls.Config{
+		Rand:                     cfg.Rand,
+		Time:                     cfg.Time,
+		Certificates:             cfg.Certificates,
+		NameToCertificate:        cfg.NameToCertificate,
+		GetCertificate:           cfg.GetCertificate,
+		RootCAs:                  cfg.RootCAs,
+		NextProtos:               cfg.NextProtos,
+		ServerName:               cfg.ServerName,
+		ClientAuth:               cfg.ClientAuth,
+		ClientCAs:                cfg.ClientCAs,
+		InsecureSkipVerify:       cfg.InsecureSkipVerify,
+		CipherSuites:             cfg.CipherSuites,
+		PreferServerCipherSuites: cfg.PreferServerCipherSuites,
+		ClientSessionCache:       cfg.ClientSessionCache,
+		MinVersion:               cfg.MinVersion,
+		MaxVersion:               cfg.MaxVersion,
+		CurvePreferences:         cfg.CurvePreferences,
+	}
+}
diff --git a/backend/vendor/github.com/gorilla/websocket/conn.go b/backend/vendor/github.com/gorilla/websocket/conn.go
index 331eebc8..ca46d2f7 100644
--- a/backend/vendor/github.com/gorilla/websocket/conn.go
+++ b/backend/vendor/github.com/gorilla/websocket/conn.go
@@ -13,7 +13,6 @@ import (
 	"math/rand"
 	"net"
 	"strconv"
-	"strings"
 	"sync"
 	"time"
 	"unicode/utf8"
@@ -402,12 +401,6 @@ func (c *Conn) write(frameType int, deadline time.Time, buf0, buf1 []byte) error
 	return nil
 }
 
-func (c *Conn) writeBufs(bufs ...[]byte) error {
-	b := net.Buffers(bufs)
-	_, err := b.WriteTo(c.conn)
-	return err
-}
-
 // WriteControl writes a control message with the given deadline. The allowed
 // message types are CloseMessage, PingMessage and PongMessage.
 func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) error {
@@ -801,69 +794,47 @@ func (c *Conn) advanceFrame() (int, error) {
 	}
 
 	// 2. Read and parse first two bytes of frame header.
-	// To aid debugging, collect and report all errors in the first two bytes
-	// of the header.
-
-	var errors []string
 
 	p, err := c.read(2)
 	if err != nil {
 		return noFrame, err
 	}
 
-	frameType := int(p[0] & 0xf)
 	final := p[0]&finalBit != 0
-	rsv1 := p[0]&rsv1Bit != 0
-	rsv2 := p[0]&rsv2Bit != 0
-	rsv3 := p[0]&rsv3Bit != 0
+	frameType := int(p[0] & 0xf)
 	mask := p[1]&maskBit != 0
 	c.setReadRemaining(int64(p[1] & 0x7f))
 
 	c.readDecompress = false
-	if rsv1 {
-		if c.newDecompressionReader != nil {
-			c.readDecompress = true
-		} else {
-			errors = append(errors, "RSV1 set")
-		}
+	if c.newDecompressionReader != nil && (p[0]&rsv1Bit) != 0 {
+		c.readDecompress = true
+		p[0] &^= rsv1Bit
 	}
 
-	if rsv2 {
-		errors = append(errors, "RSV2 set")
-	}
-
-	if rsv3 {
-		errors = append(errors, "RSV3 set")
+	if rsv := p[0] & (rsv1Bit | rsv2Bit | rsv3Bit); rsv != 0 {
+		return noFrame, c.handleProtocolError("unexpected reserved bits 0x" + strconv.FormatInt(int64(rsv), 16))
 	}
 
 	switch frameType {
 	case CloseMessage, PingMessage, PongMessage:
 		if c.readRemaining > maxControlFramePayloadSize {
-			errors = append(errors, "len > 125 for control")
+			return noFrame, c.handleProtocolError("control frame length > 125")
 		}
 		if !final {
-			errors = append(errors, "FIN not set on control")
+			return noFrame, c.handleProtocolError("control frame not final")
 		}
 	case TextMessage, BinaryMessage:
 		if !c.readFinal {
-			errors = append(errors, "data before FIN")
+			return noFrame, c.handleProtocolError("message start before final message frame")
 		}
 		c.readFinal = final
 	case continuationFrame:
 		if c.readFinal {
-			errors = append(errors, "continuation after FIN")
+			return noFrame, c.handleProtocolError("continuation after final message frame")
 		}
 		c.readFinal = final
 	default:
-		errors = append(errors, "bad opcode "+strconv.Itoa(frameType))
-	}
-
-	if mask != c.isServer {
-		errors = append(errors, "bad MASK")
-	}
-
-	if len(errors) > 0 {
-		return noFrame, c.handleProtocolError(strings.Join(errors, ", "))
+		return noFrame, c.handleProtocolError("unknown opcode " + strconv.Itoa(frameType))
 	}
 
 	// 3. Read and parse frame length as per
@@ -901,6 +872,10 @@ func (c *Conn) advanceFrame() (int, error) {
 
 	// 4. Handle frame masking.
 
+	if mask != c.isServer {
+		return noFrame, c.handleProtocolError("incorrect mask flag")
+	}
+
 	if mask {
 		c.readMaskPos = 0
 		p, err := c.read(len(c.readMaskKey))
@@ -960,7 +935,7 @@ func (c *Conn) advanceFrame() (int, error) {
 		if len(payload) >= 2 {
 			closeCode = int(binary.BigEndian.Uint16(payload))
 			if !isValidReceivedCloseCode(closeCode) {
-				return noFrame, c.handleProtocolError("bad close code " + strconv.Itoa(closeCode))
+				return noFrame, c.handleProtocolError("invalid close code")
 			}
 			closeText = string(payload[2:])
 			if !utf8.ValidString(closeText) {
@@ -977,11 +952,7 @@ func (c *Conn) advanceFrame() (int, error) {
 }
 
 func (c *Conn) handleProtocolError(message string) error {
-	data := FormatCloseMessage(CloseProtocolError, message)
-	if len(data) > maxControlFramePayloadSize {
-		data = data[:maxControlFramePayloadSize]
-	}
-	c.WriteControl(CloseMessage, data, time.Now().Add(writeWait))
+	c.WriteControl(CloseMessage, FormatCloseMessage(CloseProtocolError, message), time.Now().Add(writeWait))
 	return errors.New("websocket: " + message)
 }
 
diff --git a/backend/vendor/github.com/gorilla/websocket/conn_write.go b/backend/vendor/github.com/gorilla/websocket/conn_write.go
new file mode 100644
index 00000000..a509a21f
--- /dev/null
+++ b/backend/vendor/github.com/gorilla/websocket/conn_write.go
@@ -0,0 +1,15 @@
+// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.8
+
+package websocket
+
+import "net"
+
+func (c *Conn) writeBufs(bufs ...[]byte) error {
+	b := net.Buffers(bufs)
+	_, err := b.WriteTo(c.conn)
+	return err
+}
diff --git a/backend/vendor/github.com/gorilla/websocket/conn_write_legacy.go b/backend/vendor/github.com/gorilla/websocket/conn_write_legacy.go
new file mode 100644
index 00000000..37edaff5
--- /dev/null
+++ b/backend/vendor/github.com/gorilla/websocket/conn_write_legacy.go
@@ -0,0 +1,18 @@
+// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.8
+
+package websocket
+
+func (c *Conn) writeBufs(bufs ...[]byte) error {
+	for _, buf := range bufs {
+		if len(buf) > 0 {
+			if _, err := c.conn.Write(buf); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
diff --git a/backend/vendor/github.com/gorilla/websocket/mask.go b/backend/vendor/github.com/gorilla/websocket/mask.go
index d0742bf2..577fce9e 100644
--- a/backend/vendor/github.com/gorilla/websocket/mask.go
+++ b/backend/vendor/github.com/gorilla/websocket/mask.go
@@ -2,7 +2,6 @@
 // this source code is governed by a BSD-style license that can be found in the
 // LICENSE file.
 
-//go:build !appengine
 // +build !appengine
 
 package websocket
diff --git a/backend/vendor/github.com/gorilla/websocket/mask_safe.go b/backend/vendor/github.com/gorilla/websocket/mask_safe.go
index 36250ca7..2aac060e 100644
--- a/backend/vendor/github.com/gorilla/websocket/mask_safe.go
+++ b/backend/vendor/github.com/gorilla/websocket/mask_safe.go
@@ -2,7 +2,6 @@
 // this source code is governed by a BSD-style license that can be found in the
 // LICENSE file.
 
-//go:build appengine
 // +build appengine
 
 package websocket
diff --git a/backend/vendor/github.com/gorilla/websocket/proxy.go b/backend/vendor/github.com/gorilla/websocket/proxy.go
index e0f466b7..e87a8c9f 100644
--- a/backend/vendor/github.com/gorilla/websocket/proxy.go
+++ b/backend/vendor/github.com/gorilla/websocket/proxy.go
@@ -48,7 +48,7 @@ func (hpd *httpProxyDialer) Dial(network string, addr string) (net.Conn, error)
 	}
 
 	connectReq := &http.Request{
-		Method: http.MethodConnect,
+		Method: "CONNECT",
 		URL:    &url.URL{Opaque: addr},
 		Host:   addr,
 		Header: connectHeader,
diff --git a/backend/vendor/github.com/gorilla/websocket/server.go b/backend/vendor/github.com/gorilla/websocket/server.go
index 24d53b38..887d5589 100644
--- a/backend/vendor/github.com/gorilla/websocket/server.go
+++ b/backend/vendor/github.com/gorilla/websocket/server.go
@@ -23,8 +23,6 @@ func (e HandshakeError) Error() string { return e.message }
 
 // Upgrader specifies parameters for upgrading an HTTP connection to a
 // WebSocket connection.
-//
-// It is safe to call Upgrader's methods concurrently.
 type Upgrader struct {
 	// HandshakeTimeout specifies the duration for the handshake to complete.
 	HandshakeTimeout time.Duration
@@ -117,8 +115,8 @@ func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header
 // Upgrade upgrades the HTTP server connection to the WebSocket protocol.
 //
 // The responseHeader is included in the response to the client's upgrade
-// request. Use the responseHeader to specify cookies (Set-Cookie). To specify
-// subprotocols supported by the server, set Upgrader.Subprotocols directly.
+// request. Use the responseHeader to specify cookies (Set-Cookie) and the
+// application negotiated subprotocol (Sec-WebSocket-Protocol).
 //
 // If the upgrade fails, then Upgrade replies to the client with an HTTP error
 // response.
@@ -133,7 +131,7 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
 		return u.returnError(w, r, http.StatusBadRequest, badHandshake+"'websocket' token not found in 'Upgrade' header")
 	}
 
-	if r.Method != http.MethodGet {
+	if r.Method != "GET" {
 		return u.returnError(w, r, http.StatusMethodNotAllowed, badHandshake+"request method is not GET")
 	}
 
diff --git a/backend/vendor/github.com/gorilla/websocket/tls_handshake.go b/backend/vendor/github.com/gorilla/websocket/tls_handshake.go
deleted file mode 100644
index a62b68cc..00000000
--- a/backend/vendor/github.com/gorilla/websocket/tls_handshake.go
+++ /dev/null
@@ -1,21 +0,0 @@
-//go:build go1.17
-// +build go1.17
-
-package websocket
-
-import (
-	"context"
-	"crypto/tls"
-)
-
-func doHandshake(ctx context.Context, tlsConn *tls.Conn, cfg *tls.Config) error {
-	if err := tlsConn.HandshakeContext(ctx); err != nil {
-		return err
-	}
-	if !cfg.InsecureSkipVerify {
-		if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
-			return err
-		}
-	}
-	return nil
-}
diff --git a/backend/vendor/github.com/gorilla/websocket/tls_handshake_116.go b/backend/vendor/github.com/gorilla/websocket/tls_handshake_116.go
deleted file mode 100644
index e1b2b44f..00000000
--- a/backend/vendor/github.com/gorilla/websocket/tls_handshake_116.go
+++ /dev/null
@@ -1,21 +0,0 @@
-//go:build !go1.17
-// +build !go1.17
-
-package websocket
-
-import (
-	"context"
-	"crypto/tls"
-)
-
-func doHandshake(ctx context.Context, tlsConn *tls.Conn, cfg *tls.Config) error {
-	if err := tlsConn.Handshake(); err != nil {
-		return err
-	}
-	if !cfg.InsecureSkipVerify {
-		if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
-			return err
-		}
-	}
-	return nil
-}
diff --git a/backend/vendor/github.com/gorilla/websocket/trace.go b/backend/vendor/github.com/gorilla/websocket/trace.go
new file mode 100644
index 00000000..834f122a
--- /dev/null
+++ b/backend/vendor/github.com/gorilla/websocket/trace.go
@@ -0,0 +1,19 @@
+// +build go1.8
+
+package websocket
+
+import (
+	"crypto/tls"
+	"net/http/httptrace"
+)
+
+func doHandshakeWithTrace(trace *httptrace.ClientTrace, tlsConn *tls.Conn, cfg *tls.Config) error {
+	if trace.TLSHandshakeStart != nil {
+		trace.TLSHandshakeStart()
+	}
+	err := doHandshake(tlsConn, cfg)
+	if trace.TLSHandshakeDone != nil {
+		trace.TLSHandshakeDone(tlsConn.ConnectionState(), err)
+	}
+	return err
+}
diff --git a/backend/vendor/github.com/gorilla/websocket/trace_17.go b/backend/vendor/github.com/gorilla/websocket/trace_17.go
new file mode 100644
index 00000000..77d05a0b
--- /dev/null
+++ b/backend/vendor/github.com/gorilla/websocket/trace_17.go
@@ -0,0 +1,12 @@
+// +build !go1.8
+
+package websocket
+
+import (
+	"crypto/tls"
+	"net/http/httptrace"
+)
+
+func doHandshakeWithTrace(trace *httptrace.ClientTrace, tlsConn *tls.Conn, cfg *tls.Config) error {
+	return doHandshake(tlsConn, cfg)
+}
diff --git a/backend/vendor/github.com/hashicorp/errwrap/errwrap.go b/backend/vendor/github.com/hashicorp/errwrap/errwrap.go
index 44e368e5..a733bef1 100644
--- a/backend/vendor/github.com/hashicorp/errwrap/errwrap.go
+++ b/backend/vendor/github.com/hashicorp/errwrap/errwrap.go
@@ -44,8 +44,6 @@ func Wrap(outer, inner error) error {
 //
 // format is the format of the error message. The string '{{err}}' will
 // be replaced with the original error message.
-//
-// Deprecated: Use fmt.Errorf()
 func Wrapf(format string, err error) error {
 	outerMsg := ""
 	if err != nil {
@@ -150,9 +148,6 @@ func Walk(err error, cb WalkFunc) {
 		for _, err := range e.WrappedErrors() {
 			Walk(err, cb)
 		}
-	case interface{ Unwrap() error }:
-		cb(err)
-		Walk(e.Unwrap(), cb)
 	default:
 		cb(err)
 	}
@@ -172,7 +167,3 @@ func (w *wrappedError) Error() string {
 func (w *wrappedError) WrappedErrors() []error {
 	return []error{w.Outer, w.Inner}
 }
-
-func (w *wrappedError) Unwrap() error {
-	return w.Inner
-}
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/.golangci.yml b/backend/vendor/github.com/hashicorp/golang-lru/.golangci.yml
deleted file mode 100644
index 49202fc4..00000000
--- a/backend/vendor/github.com/hashicorp/golang-lru/.golangci.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-linters:
-  enable:
-    - megacheck
-    - revive
-    - govet
-    - unconvert
-    - megacheck
-    - gas
-    - gocyclo
-    - dupl
-    - misspell
-    - unparam
-    - unused
-    - typecheck
-    - ineffassign
-    - stylecheck
-    - exportloopref
-    - gocritic
-    - nakedret
-    - gosimple
-    - prealloc
-  fast: false
-  disable-all: true
-
-issues:
-  exclude-rules:
-    - path: _test\.go
-      linters:
-        - dupl
-  exclude-use-default: false
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/2q.go b/backend/vendor/github.com/hashicorp/golang-lru/2q.go
index 15fcad03..e474cd07 100644
--- a/backend/vendor/github.com/hashicorp/golang-lru/2q.go
+++ b/backend/vendor/github.com/hashicorp/golang-lru/2q.go
@@ -44,7 +44,7 @@ func New2Q(size int) (*TwoQueueCache, error) {
 
 // New2QParams creates a new TwoQueueCache using the provided
 // parameter values.
-func New2QParams(size int, recentRatio, ghostRatio float64) (*TwoQueueCache, error) {
+func New2QParams(size int, recentRatio float64, ghostRatio float64) (*TwoQueueCache, error) {
 	if size <= 0 {
 		return nil, fmt.Errorf("invalid size")
 	}
@@ -138,6 +138,7 @@ func (c *TwoQueueCache) Add(key, value interface{}) {
 	// Add to the recently seen list
 	c.ensureSpace(false)
 	c.recent.Add(key, value)
+	return
 }
 
 // ensureSpace is used to ensure we have space in the cache
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/LICENSE b/backend/vendor/github.com/hashicorp/golang-lru/LICENSE
index 0e5d580e..be2cc4df 100644
--- a/backend/vendor/github.com/hashicorp/golang-lru/LICENSE
+++ b/backend/vendor/github.com/hashicorp/golang-lru/LICENSE
@@ -1,5 +1,3 @@
-Copyright (c) 2014 HashiCorp, Inc.
-
 Mozilla Public License, version 2.0
 
 1. Definitions
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/README.md b/backend/vendor/github.com/hashicorp/golang-lru/README.md
index 063bb160..33e58cfa 100644
--- a/backend/vendor/github.com/hashicorp/golang-lru/README.md
+++ b/backend/vendor/github.com/hashicorp/golang-lru/README.md
@@ -7,7 +7,7 @@ thread safe LRU cache. It is based on the cache in Groupcache.
 Documentation
 =============
 
-Full docs are available on [Godoc](https://pkg.go.dev/github.com/hashicorp/golang-lru)
+Full docs are available on [Godoc](http://godoc.org/github.com/hashicorp/golang-lru)
 
 Example
 =======
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/arc.go b/backend/vendor/github.com/hashicorp/golang-lru/arc.go
index e396f842..555225a2 100644
--- a/backend/vendor/github.com/hashicorp/golang-lru/arc.go
+++ b/backend/vendor/github.com/hashicorp/golang-lru/arc.go
@@ -173,6 +173,7 @@ func (c *ARCCache) Add(key, value interface{}) {
 
 	// Add to the recently seen list
 	c.t1.Add(key, value)
+	return
 }
 
 // replace is used to adaptively evict from either T1 or T2
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/lru.go b/backend/vendor/github.com/hashicorp/golang-lru/lru.go
index 895d8e3e..4e5e9d8f 100644
--- a/backend/vendor/github.com/hashicorp/golang-lru/lru.go
+++ b/backend/vendor/github.com/hashicorp/golang-lru/lru.go
@@ -6,17 +6,10 @@ import (
 	"github.com/hashicorp/golang-lru/simplelru"
 )
 
-const (
-	// DefaultEvictedBufferSize defines the default buffer size to store evicted key/val
-	DefaultEvictedBufferSize = 16
-)
-
 // Cache is a thread-safe fixed size LRU cache.
 type Cache struct {
-	lru                      *simplelru.LRU
-	evictedKeys, evictedVals []interface{}
-	onEvictedCB              func(k, v interface{})
-	lock                     sync.RWMutex
+	lru  simplelru.LRUCache
+	lock sync.RWMutex
 }
 
 // New creates an LRU of the given size.
@@ -26,63 +19,30 @@ func New(size int) (*Cache, error) {
 
 // NewWithEvict constructs a fixed size cache with the given eviction
 // callback.
-func NewWithEvict(size int, onEvicted func(key, value interface{})) (c *Cache, err error) {
-	// create a cache with default settings
-	c = &Cache{
-		onEvictedCB: onEvicted,
+func NewWithEvict(size int, onEvicted func(key interface{}, value interface{})) (*Cache, error) {
+	lru, err := simplelru.NewLRU(size, simplelru.EvictCallback(onEvicted))
+	if err != nil {
+		return nil, err
 	}
-	if onEvicted != nil {
-		c.initEvictBuffers()
-		onEvicted = c.onEvicted
+	c := &Cache{
+		lru: lru,
 	}
-	c.lru, err = simplelru.NewLRU(size, onEvicted)
-	return
-}
-
-func (c *Cache) initEvictBuffers() {
-	c.evictedKeys = make([]interface{}, 0, DefaultEvictedBufferSize)
-	c.evictedVals = make([]interface{}, 0, DefaultEvictedBufferSize)
-}
-
-// onEvicted save evicted key/val and sent in externally registered callback
-// outside of critical section
-func (c *Cache) onEvicted(k, v interface{}) {
-	c.evictedKeys = append(c.evictedKeys, k)
-	c.evictedVals = append(c.evictedVals, v)
+	return c, nil
 }
 
 // Purge is used to completely clear the cache.
 func (c *Cache) Purge() {
-	var ks, vs []interface{}
 	c.lock.Lock()
 	c.lru.Purge()
-	if c.onEvictedCB != nil && len(c.evictedKeys) > 0 {
-		ks, vs = c.evictedKeys, c.evictedVals
-		c.initEvictBuffers()
-	}
 	c.lock.Unlock()
-	// invoke callback outside of critical section
-	if c.onEvictedCB != nil {
-		for i := 0; i < len(ks); i++ {
-			c.onEvictedCB(ks[i], vs[i])
-		}
-	}
 }
 
 // Add adds a value to the cache. Returns true if an eviction occurred.
 func (c *Cache) Add(key, value interface{}) (evicted bool) {
-	var k, v interface{}
 	c.lock.Lock()
 	evicted = c.lru.Add(key, value)
-	if c.onEvictedCB != nil && evicted {
-		k, v = c.evictedKeys[0], c.evictedVals[0]
-		c.evictedKeys, c.evictedVals = c.evictedKeys[:0], c.evictedVals[:0]
-	}
 	c.lock.Unlock()
-	if c.onEvictedCB != nil && evicted {
-		c.onEvictedCB(k, v)
-	}
-	return
+	return evicted
 }
 
 // Get looks up a key's value from the cache.
@@ -115,21 +75,13 @@ func (c *Cache) Peek(key interface{}) (value interface{}, ok bool) {
 // recent-ness or deleting it for being stale, and if not, adds the value.
 // Returns whether found and whether an eviction occurred.
 func (c *Cache) ContainsOrAdd(key, value interface{}) (ok, evicted bool) {
-	var k, v interface{}
 	c.lock.Lock()
+	defer c.lock.Unlock()
+
 	if c.lru.Contains(key) {
-		c.lock.Unlock()
 		return true, false
 	}
 	evicted = c.lru.Add(key, value)
-	if c.onEvictedCB != nil && evicted {
-		k, v = c.evictedKeys[0], c.evictedVals[0]
-		c.evictedKeys, c.evictedVals = c.evictedKeys[:0], c.evictedVals[:0]
-	}
-	c.lock.Unlock()
-	if c.onEvictedCB != nil && evicted {
-		c.onEvictedCB(k, v)
-	}
 	return false, evicted
 }
 
@@ -137,80 +89,47 @@ func (c *Cache) ContainsOrAdd(key, value interface{}) (ok, evicted bool) {
 // recent-ness or deleting it for being stale, and if not, adds the value.
 // Returns whether found and whether an eviction occurred.
 func (c *Cache) PeekOrAdd(key, value interface{}) (previous interface{}, ok, evicted bool) {
-	var k, v interface{}
 	c.lock.Lock()
+	defer c.lock.Unlock()
+
 	previous, ok = c.lru.Peek(key)
 	if ok {
-		c.lock.Unlock()
 		return previous, true, false
 	}
+
 	evicted = c.lru.Add(key, value)
-	if c.onEvictedCB != nil && evicted {
-		k, v = c.evictedKeys[0], c.evictedVals[0]
-		c.evictedKeys, c.evictedVals = c.evictedKeys[:0], c.evictedVals[:0]
-	}
-	c.lock.Unlock()
-	if c.onEvictedCB != nil && evicted {
-		c.onEvictedCB(k, v)
-	}
 	return nil, false, evicted
 }
 
 // Remove removes the provided key from the cache.
 func (c *Cache) Remove(key interface{}) (present bool) {
-	var k, v interface{}
 	c.lock.Lock()
 	present = c.lru.Remove(key)
-	if c.onEvictedCB != nil && present {
-		k, v = c.evictedKeys[0], c.evictedVals[0]
-		c.evictedKeys, c.evictedVals = c.evictedKeys[:0], c.evictedVals[:0]
-	}
 	c.lock.Unlock()
-	if c.onEvictedCB != nil && present {
-		c.onEvictedCB(k, v)
-	}
 	return
 }
 
 // Resize changes the cache size.
 func (c *Cache) Resize(size int) (evicted int) {
-	var ks, vs []interface{}
 	c.lock.Lock()
 	evicted = c.lru.Resize(size)
-	if c.onEvictedCB != nil && evicted > 0 {
-		ks, vs = c.evictedKeys, c.evictedVals
-		c.initEvictBuffers()
-	}
 	c.lock.Unlock()
-	if c.onEvictedCB != nil && evicted > 0 {
-		for i := 0; i < len(ks); i++ {
-			c.onEvictedCB(ks[i], vs[i])
-		}
-	}
 	return evicted
 }
 
 // RemoveOldest removes the oldest item from the cache.
-func (c *Cache) RemoveOldest() (key, value interface{}, ok bool) {
-	var k, v interface{}
+func (c *Cache) RemoveOldest() (key interface{}, value interface{}, ok bool) {
 	c.lock.Lock()
 	key, value, ok = c.lru.RemoveOldest()
-	if c.onEvictedCB != nil && ok {
-		k, v = c.evictedKeys[0], c.evictedVals[0]
-		c.evictedKeys, c.evictedVals = c.evictedKeys[:0], c.evictedVals[:0]
-	}
 	c.lock.Unlock()
-	if c.onEvictedCB != nil && ok {
-		c.onEvictedCB(k, v)
-	}
 	return
 }
 
 // GetOldest returns the oldest entry
-func (c *Cache) GetOldest() (key, value interface{}, ok bool) {
-	c.lock.RLock()
+func (c *Cache) GetOldest() (key interface{}, value interface{}, ok bool) {
+	c.lock.Lock()
 	key, value, ok = c.lru.GetOldest()
-	c.lock.RUnlock()
+	c.lock.Unlock()
 	return
 }
 
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/simplelru/lru.go b/backend/vendor/github.com/hashicorp/golang-lru/simplelru/lru.go
index 9233583c..a86c8539 100644
--- a/backend/vendor/github.com/hashicorp/golang-lru/simplelru/lru.go
+++ b/backend/vendor/github.com/hashicorp/golang-lru/simplelru/lru.go
@@ -25,7 +25,7 @@ type entry struct {
 // NewLRU constructs an LRU of the given size
 func NewLRU(size int, onEvict EvictCallback) (*LRU, error) {
 	if size <= 0 {
-		return nil, errors.New("must provide a positive size")
+		return nil, errors.New("Must provide a positive size")
 	}
 	c := &LRU{
 		size:      size,
@@ -109,7 +109,7 @@ func (c *LRU) Remove(key interface{}) (present bool) {
 }
 
 // RemoveOldest removes the oldest item from the cache.
-func (c *LRU) RemoveOldest() (key, value interface{}, ok bool) {
+func (c *LRU) RemoveOldest() (key interface{}, value interface{}, ok bool) {
 	ent := c.evictList.Back()
 	if ent != nil {
 		c.removeElement(ent)
@@ -120,7 +120,7 @@ func (c *LRU) RemoveOldest() (key, value interface{}, ok bool) {
 }
 
 // GetOldest returns the oldest entry
-func (c *LRU) GetOldest() (key, value interface{}, ok bool) {
+func (c *LRU) GetOldest() (key interface{}, value interface{}, ok bool) {
 	ent := c.evictList.Back()
 	if ent != nil {
 		kv := ent.Value.(*entry)
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/simplelru/lru_interface.go b/backend/vendor/github.com/hashicorp/golang-lru/simplelru/lru_interface.go
index cb7f8caf..92d70934 100644
--- a/backend/vendor/github.com/hashicorp/golang-lru/simplelru/lru_interface.go
+++ b/backend/vendor/github.com/hashicorp/golang-lru/simplelru/lru_interface.go
@@ -1,4 +1,3 @@
-// Package simplelru provides simple LRU implementation based on build-in container/list.
 package simplelru
 
 // LRUCache is the interface for simple LRU cache.
@@ -35,6 +34,6 @@ type LRUCache interface {
 	// Clears all cache entries.
 	Purge()
 
-	// Resizes cache, returning number evicted
-	Resize(int) int
+  // Resizes cache, returning number evicted
+  Resize(int) int
 }
diff --git a/backend/vendor/github.com/hashicorp/golang-lru/testing.go b/backend/vendor/github.com/hashicorp/golang-lru/testing.go
deleted file mode 100644
index 49276078..00000000
--- a/backend/vendor/github.com/hashicorp/golang-lru/testing.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package lru
-
-import (
-	"crypto/rand"
-	"math"
-	"math/big"
-	"testing"
-)
-
-func getRand(tb testing.TB) int64 {
-	out, err := rand.Int(rand.Reader, big.NewInt(math.MaxInt64))
-	if err != nil {
-		tb.Fatal(err)
-	}
-	return out.Int64()
-}
diff --git a/backend/vendor/github.com/klauspost/compress/.gitignore b/backend/vendor/github.com/klauspost/compress/.gitignore
index d31b3781..b35f8449 100644
--- a/backend/vendor/github.com/klauspost/compress/.gitignore
+++ b/backend/vendor/github.com/klauspost/compress/.gitignore
@@ -23,10 +23,3 @@ _testmain.go
 *.test
 *.prof
 /s2/cmd/_s2sx/sfx-exe
-
-# Linux perf files
-perf.data
-perf.data.old
-
-# gdb history
-.gdb_history
diff --git a/backend/vendor/github.com/klauspost/compress/README.md b/backend/vendor/github.com/klauspost/compress/README.md
index 5b7cf781..9ddf39f6 100644
--- a/backend/vendor/github.com/klauspost/compress/README.md
+++ b/backend/vendor/github.com/klauspost/compress/README.md
@@ -17,30 +17,6 @@ This package provides various compression algorithms.
 
 # changelog
 
-* Mar 11, 2022 (v1.15.1)
-	* huff0: Add x86 assembly of Decode4X by @WojciechMula in [#512](https://github.com/klauspost/compress/pull/512)
-	* zstd: Reuse zip decoders in [#514](https://github.com/klauspost/compress/pull/514)
-	* zstd: Detect extra block data and report as corrupted in [#520](https://github.com/klauspost/compress/pull/520)
-	* zstd: Handle zero sized frame content size stricter in [#521](https://github.com/klauspost/compress/pull/521)
-	* zstd: Add stricter block size checks in [#523](https://github.com/klauspost/compress/pull/523)
-
-* Mar 3, 2022 (v1.15.0)
-	* zstd: Refactor decoder by @klauspost in [#498](https://github.com/klauspost/compress/pull/498)
-	* zstd: Add stream encoding without goroutines by @klauspost in [#505](https://github.com/klauspost/compress/pull/505)
-	* huff0: Prevent single blocks exceeding 16 bits by @klauspost in[#507](https://github.com/klauspost/compress/pull/507)
-	* flate: Inline literal emission by @klauspost in [#509](https://github.com/klauspost/compress/pull/509)
-	* gzhttp: Add zstd to transport by @klauspost in [#400](https://github.com/klauspost/compress/pull/400)
-	* gzhttp: Make content-type optional by @klauspost in [#510](https://github.com/klauspost/compress/pull/510)
-
-

-	See  Details
-Both compression and decompression now supports "synchronous" stream operations. This means that whenever "concurrency" is set to 1, they will operate without spawning goroutines.
-
-Stream decompression is now faster on asynchronous, since the goroutine allocation much more effectively splits the workload. On typical streams this will typically use 2 cores fully for decompression. When a stream has finished decoding no goroutines will be left over, so decoders can now safely be pooled and still be garbage collected.
-
-While the release has been extensively tested, it is recommended to testing when upgrading.
-

-
 * Feb 22, 2022 (v1.14.4)
 	* flate: Fix rare huffman only (-2) corruption. [#503](https://github.com/klauspost/compress/pull/503)
 	* zip: Update deprecated CreateHeaderRaw to correctly call CreateRaw by @saracen in [#502](https://github.com/klauspost/compress/pull/502)
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/autogen.go b/backend/vendor/github.com/klauspost/compress/huff0/autogen.go
deleted file mode 100644
index ff2c69d6..00000000
--- a/backend/vendor/github.com/klauspost/compress/huff0/autogen.go
+++ /dev/null
@@ -1,5 +0,0 @@
-package huff0
-
-//go:generate go run generate.go
-//go:generate asmfmt -w decompress_amd64.s
-//go:generate asmfmt -w decompress_8b_amd64.s
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/bitreader.go b/backend/vendor/github.com/klauspost/compress/huff0/bitreader.go
index 451160ed..03562db1 100644
--- a/backend/vendor/github.com/klauspost/compress/huff0/bitreader.go
+++ b/backend/vendor/github.com/klauspost/compress/huff0/bitreader.go
@@ -165,11 +165,6 @@ func (b *bitReaderShifted) peekBitsFast(n uint8) uint16 {
 	return uint16(b.value >> ((64 - n) & 63))
 }
 
-// peekTopBits(n) is equvialent to peekBitFast(64 - n)
-func (b *bitReaderShifted) peekTopBits(n uint8) uint16 {
-	return uint16(b.value >> n)
-}
-
 func (b *bitReaderShifted) advance(n uint8) {
 	b.bitsRead += n
 	b.value <<= n & 63
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/decompress.go b/backend/vendor/github.com/klauspost/compress/huff0/decompress.go
index 04f65299..3ae7d467 100644
--- a/backend/vendor/github.com/klauspost/compress/huff0/decompress.go
+++ b/backend/vendor/github.com/klauspost/compress/huff0/decompress.go
@@ -725,6 +725,189 @@ func (d *Decoder) decompress1X8BitExactly(dst, src []byte) ([]byte, error) {
 	return dst, br.close()
 }
 
+// Decompress4X will decompress a 4X encoded stream.
+// The length of the supplied input must match the end of a block exactly.
+// The *capacity* of the dst slice must match the destination size of
+// the uncompressed data exactly.
+func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
+	if len(d.dt.single) == 0 {
+		return nil, errors.New("no table loaded")
+	}
+	if len(src) < 6+(4*1) {
+		return nil, errors.New("input too small")
+	}
+	if use8BitTables && d.actualTableLog <= 8 {
+		return d.decompress4X8bit(dst, src)
+	}
+
+	var br [4]bitReaderShifted
+	// Decode "jump table"
+	start := 6
+	for i := 0; i < 3; i++ {
+		length := int(src[i*2]) | (int(src[i*2+1]) << 8)
+		if start+length >= len(src) {
+			return nil, errors.New("truncated input (or invalid offset)")
+		}
+		err := br[i].init(src[start : start+length])
+		if err != nil {
+			return nil, err
+		}
+		start += length
+	}
+	err := br[3].init(src[start:])
+	if err != nil {
+		return nil, err
+	}
+
+	// destination, offset to match first output
+	dstSize := cap(dst)
+	dst = dst[:dstSize]
+	out := dst
+	dstEvery := (dstSize + 3) / 4
+
+	const tlSize = 1 << tableLogMax
+	const tlMask = tlSize - 1
+	single := d.dt.single[:tlSize]
+
+	// Use temp table to avoid bound checks/append penalty.
+	buf := d.buffer()
+	var off uint8
+	var decoded int
+
+	// Decode 2 values from each decoder/loop.
+	const bufoff = 256
+	for {
+		if br[0].off < 4 || br[1].off < 4 || br[2].off < 4 || br[3].off < 4 {
+			break
+		}
+
+		{
+			const stream = 0
+			const stream2 = 1
+			br[stream].fillFast()
+			br[stream2].fillFast()
+
+			val := br[stream].peekBitsFast(d.actualTableLog)
+			val2 := br[stream2].peekBitsFast(d.actualTableLog)
+			v := single[val&tlMask]
+			v2 := single[val2&tlMask]
+			br[stream].advance(uint8(v.entry))
+			br[stream2].advance(uint8(v2.entry))
+			buf[stream][off] = uint8(v.entry >> 8)
+			buf[stream2][off] = uint8(v2.entry >> 8)
+
+			val = br[stream].peekBitsFast(d.actualTableLog)
+			val2 = br[stream2].peekBitsFast(d.actualTableLog)
+			v = single[val&tlMask]
+			v2 = single[val2&tlMask]
+			br[stream].advance(uint8(v.entry))
+			br[stream2].advance(uint8(v2.entry))
+			buf[stream][off+1] = uint8(v.entry >> 8)
+			buf[stream2][off+1] = uint8(v2.entry >> 8)
+		}
+
+		{
+			const stream = 2
+			const stream2 = 3
+			br[stream].fillFast()
+			br[stream2].fillFast()
+
+			val := br[stream].peekBitsFast(d.actualTableLog)
+			val2 := br[stream2].peekBitsFast(d.actualTableLog)
+			v := single[val&tlMask]
+			v2 := single[val2&tlMask]
+			br[stream].advance(uint8(v.entry))
+			br[stream2].advance(uint8(v2.entry))
+			buf[stream][off] = uint8(v.entry >> 8)
+			buf[stream2][off] = uint8(v2.entry >> 8)
+
+			val = br[stream].peekBitsFast(d.actualTableLog)
+			val2 = br[stream2].peekBitsFast(d.actualTableLog)
+			v = single[val&tlMask]
+			v2 = single[val2&tlMask]
+			br[stream].advance(uint8(v.entry))
+			br[stream2].advance(uint8(v2.entry))
+			buf[stream][off+1] = uint8(v.entry >> 8)
+			buf[stream2][off+1] = uint8(v2.entry >> 8)
+		}
+
+		off += 2
+
+		if off == 0 {
+			if bufoff > dstEvery {
+				d.bufs.Put(buf)
+				return nil, errors.New("corruption detected: stream overrun 1")
+			}
+			copy(out, buf[0][:])
+			copy(out[dstEvery:], buf[1][:])
+			copy(out[dstEvery*2:], buf[2][:])
+			copy(out[dstEvery*3:], buf[3][:])
+			out = out[bufoff:]
+			decoded += bufoff * 4
+			// There must at least be 3 buffers left.
+			if len(out) < dstEvery*3 {
+				d.bufs.Put(buf)
+				return nil, errors.New("corruption detected: stream overrun 2")
+			}
+		}
+	}
+	if off > 0 {
+		ioff := int(off)
+		if len(out) < dstEvery*3+ioff {
+			d.bufs.Put(buf)
+			return nil, errors.New("corruption detected: stream overrun 3")
+		}
+		copy(out, buf[0][:off])
+		copy(out[dstEvery:], buf[1][:off])
+		copy(out[dstEvery*2:], buf[2][:off])
+		copy(out[dstEvery*3:], buf[3][:off])
+		decoded += int(off) * 4
+		out = out[off:]
+	}
+
+	// Decode remaining.
+	remainBytes := dstEvery - (decoded / 4)
+	for i := range br {
+		offset := dstEvery * i
+		endsAt := offset + remainBytes
+		if endsAt > len(out) {
+			endsAt = len(out)
+		}
+		br := &br[i]
+		bitsLeft := br.remaining()
+		for bitsLeft > 0 {
+			br.fill()
+			if offset >= endsAt {
+				d.bufs.Put(buf)
+				return nil, errors.New("corruption detected: stream overrun 4")
+			}
+
+			// Read value and increment offset.
+			val := br.peekBitsFast(d.actualTableLog)
+			v := single[val&tlMask].entry
+			nBits := uint8(v)
+			br.advance(nBits)
+			bitsLeft -= uint(nBits)
+			out[offset] = uint8(v >> 8)
+			offset++
+		}
+		if offset != endsAt {
+			d.bufs.Put(buf)
+			return nil, fmt.Errorf("corruption detected: short output block %d, end %d != %d", i, offset, endsAt)
+		}
+		decoded += offset - dstEvery*i
+		err = br.close()
+		if err != nil {
+			return nil, err
+		}
+	}
+	d.bufs.Put(buf)
+	if dstSize != decoded {
+		return nil, errors.New("corruption detected: short output block")
+	}
+	return dst, nil
+}
+
 // Decompress4X will decompress a 4X encoded stream.
 // The length of the supplied input must match the end of a block exactly.
 // The *capacity* of the dst slice must match the destination size of
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s b/backend/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s
deleted file mode 100644
index 0d6cb1a9..00000000
--- a/backend/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s
+++ /dev/null
@@ -1,488 +0,0 @@
-// +build !appengine
-// +build gc
-// +build !noasm
-
-#include "textflag.h"
-#include "funcdata.h"
-#include "go_asm.h"
-
-#define bufoff      256 // see decompress.go, we're using [4][256]byte table
-
-// func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
-//	peekBits uint8, buf *byte, tbl *dEntrySingle) (int, bool)
-TEXT ·decompress4x_8b_loop_x86(SB), NOSPLIT, $8
-#define off             R8
-#define buffer          DI
-#define table           SI
-
-#define br_bits_read    R9
-#define br_value        R10
-#define br_offset       R11
-#define peek_bits       R12
-#define exhausted       DX
-
-#define br0             R13
-#define br1             R14
-#define br2             R15
-#define br3             BP
-
-	MOVQ BP, 0(SP)
-
-	XORQ exhausted, exhausted // exhausted = false
-	XORQ off, off             // off = 0
-
-	MOVBQZX peekBits+32(FP), peek_bits
-	MOVQ    buf+40(FP), buffer
-	MOVQ    tbl+48(FP), table
-
-	MOVQ pbr0+0(FP), br0
-	MOVQ pbr1+8(FP), br1
-	MOVQ pbr2+16(FP), br2
-	MOVQ pbr3+24(FP), br3
-
-main_loop:
-
-	// const stream = 0
-	// br0.fillFast()
-	MOVBQZX bitReaderShifted_bitsRead(br0), br_bits_read
-	MOVQ    bitReaderShifted_value(br0), br_value
-	MOVQ    bitReaderShifted_off(br0), br_offset
-
-	// if b.bitsRead >= 32 {
-	CMPQ br_bits_read, $32
-	JB   skip_fill0
-
-	SUBQ $32, br_bits_read // b.bitsRead -= 32
-	SUBQ $4, br_offset     // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-	MOVQ bitReaderShifted_in(br0), AX
-	MOVL 0(br_offset)(AX*1), AX       // AX = uint32(b.in[b.off:b.off+4])
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-	MOVQ br_bits_read, CX
-	SHLQ CL, AX
-	ORQ  AX, br_value
-
-	// exhausted = exhausted || (br0.off < 4)
-	CMPQ  br_offset, $4
-	SETLT DL
-	ORB   DL, DH
-
-	// }
-skip_fill0:
-
-	// val0 := br0.peekTopBits(peekBits)
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v0 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br0.advance(uint8(v0.entry))
-	MOVB    AH, BL           // BL = uint8(v0.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// val1 := br0.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v1 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br0.advance(uint8(v1.entry))
-	MOVB    AH, BH           // BH = uint8(v1.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CX, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off] = uint8(v0.entry >> 8)
-	// buf[stream][off+1] = uint8(v1.entry >> 8)
-	MOVW BX, 0(buffer)(off*1)
-
-	// SECOND PART:
-	// val2 := br0.peekTopBits(peekBits)
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v2 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br0.advance(uint8(v0.entry))
-	MOVB    AH, BL           // BL = uint8(v0.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// val3 := br0.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v3 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br0.advance(uint8(v1.entry))
-	MOVB    AH, BH           // BH = uint8(v1.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CX, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off+2] = uint8(v2.entry >> 8)
-	// buf[stream][off+3] = uint8(v3.entry >> 8)
-	MOVW BX, 0+2(buffer)(off*1)
-
-	// update the bitrader reader structure
-	MOVB br_bits_read, bitReaderShifted_bitsRead(br0)
-	MOVQ br_value, bitReaderShifted_value(br0)
-	MOVQ br_offset, bitReaderShifted_off(br0)
-
-	// const stream = 1
-	// br1.fillFast()
-	MOVBQZX bitReaderShifted_bitsRead(br1), br_bits_read
-	MOVQ    bitReaderShifted_value(br1), br_value
-	MOVQ    bitReaderShifted_off(br1), br_offset
-
-	// if b.bitsRead >= 32 {
-	CMPQ br_bits_read, $32
-	JB   skip_fill1
-
-	SUBQ $32, br_bits_read // b.bitsRead -= 32
-	SUBQ $4, br_offset     // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-	MOVQ bitReaderShifted_in(br1), AX
-	MOVL 0(br_offset)(AX*1), AX       // AX = uint32(b.in[b.off:b.off+4])
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-	MOVQ br_bits_read, CX
-	SHLQ CL, AX
-	ORQ  AX, br_value
-
-	// exhausted = exhausted || (br1.off < 4)
-	CMPQ  br_offset, $4
-	SETLT DL
-	ORB   DL, DH
-
-	// }
-skip_fill1:
-
-	// val0 := br1.peekTopBits(peekBits)
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v0 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br1.advance(uint8(v0.entry))
-	MOVB    AH, BL           // BL = uint8(v0.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// val1 := br1.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v1 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br1.advance(uint8(v1.entry))
-	MOVB    AH, BH           // BH = uint8(v1.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CX, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off] = uint8(v0.entry >> 8)
-	// buf[stream][off+1] = uint8(v1.entry >> 8)
-	MOVW BX, 256(buffer)(off*1)
-
-	// SECOND PART:
-	// val2 := br1.peekTopBits(peekBits)
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v2 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br1.advance(uint8(v0.entry))
-	MOVB    AH, BL           // BL = uint8(v0.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// val3 := br1.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v3 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br1.advance(uint8(v1.entry))
-	MOVB    AH, BH           // BH = uint8(v1.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CX, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off+2] = uint8(v2.entry >> 8)
-	// buf[stream][off+3] = uint8(v3.entry >> 8)
-	MOVW BX, 256+2(buffer)(off*1)
-
-	// update the bitrader reader structure
-	MOVB br_bits_read, bitReaderShifted_bitsRead(br1)
-	MOVQ br_value, bitReaderShifted_value(br1)
-	MOVQ br_offset, bitReaderShifted_off(br1)
-
-	// const stream = 2
-	// br2.fillFast()
-	MOVBQZX bitReaderShifted_bitsRead(br2), br_bits_read
-	MOVQ    bitReaderShifted_value(br2), br_value
-	MOVQ    bitReaderShifted_off(br2), br_offset
-
-	// if b.bitsRead >= 32 {
-	CMPQ br_bits_read, $32
-	JB   skip_fill2
-
-	SUBQ $32, br_bits_read // b.bitsRead -= 32
-	SUBQ $4, br_offset     // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-	MOVQ bitReaderShifted_in(br2), AX
-	MOVL 0(br_offset)(AX*1), AX       // AX = uint32(b.in[b.off:b.off+4])
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-	MOVQ br_bits_read, CX
-	SHLQ CL, AX
-	ORQ  AX, br_value
-
-	// exhausted = exhausted || (br2.off < 4)
-	CMPQ  br_offset, $4
-	SETLT DL
-	ORB   DL, DH
-
-	// }
-skip_fill2:
-
-	// val0 := br2.peekTopBits(peekBits)
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v0 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br2.advance(uint8(v0.entry))
-	MOVB    AH, BL           // BL = uint8(v0.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// val1 := br2.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v1 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br2.advance(uint8(v1.entry))
-	MOVB    AH, BH           // BH = uint8(v1.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CX, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off] = uint8(v0.entry >> 8)
-	// buf[stream][off+1] = uint8(v1.entry >> 8)
-	MOVW BX, 512(buffer)(off*1)
-
-	// SECOND PART:
-	// val2 := br2.peekTopBits(peekBits)
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v2 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br2.advance(uint8(v0.entry))
-	MOVB    AH, BL           // BL = uint8(v0.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// val3 := br2.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v3 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br2.advance(uint8(v1.entry))
-	MOVB    AH, BH           // BH = uint8(v1.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CX, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off+2] = uint8(v2.entry >> 8)
-	// buf[stream][off+3] = uint8(v3.entry >> 8)
-	MOVW BX, 512+2(buffer)(off*1)
-
-	// update the bitrader reader structure
-	MOVB br_bits_read, bitReaderShifted_bitsRead(br2)
-	MOVQ br_value, bitReaderShifted_value(br2)
-	MOVQ br_offset, bitReaderShifted_off(br2)
-
-	// const stream = 3
-	// br3.fillFast()
-	MOVBQZX bitReaderShifted_bitsRead(br3), br_bits_read
-	MOVQ    bitReaderShifted_value(br3), br_value
-	MOVQ    bitReaderShifted_off(br3), br_offset
-
-	// if b.bitsRead >= 32 {
-	CMPQ br_bits_read, $32
-	JB   skip_fill3
-
-	SUBQ $32, br_bits_read // b.bitsRead -= 32
-	SUBQ $4, br_offset     // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-	MOVQ bitReaderShifted_in(br3), AX
-	MOVL 0(br_offset)(AX*1), AX       // AX = uint32(b.in[b.off:b.off+4])
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-	MOVQ br_bits_read, CX
-	SHLQ CL, AX
-	ORQ  AX, br_value
-
-	// exhausted = exhausted || (br3.off < 4)
-	CMPQ  br_offset, $4
-	SETLT DL
-	ORB   DL, DH
-
-	// }
-skip_fill3:
-
-	// val0 := br3.peekTopBits(peekBits)
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v0 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br3.advance(uint8(v0.entry))
-	MOVB    AH, BL           // BL = uint8(v0.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// val1 := br3.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v1 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br3.advance(uint8(v1.entry))
-	MOVB    AH, BH           // BH = uint8(v1.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CX, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off] = uint8(v0.entry >> 8)
-	// buf[stream][off+1] = uint8(v1.entry >> 8)
-	MOVW BX, 768(buffer)(off*1)
-
-	// SECOND PART:
-	// val2 := br3.peekTopBits(peekBits)
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v2 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br3.advance(uint8(v0.entry))
-	MOVB    AH, BL           // BL = uint8(v0.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// val3 := br3.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-	// v3 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br3.advance(uint8(v1.entry))
-	MOVB    AH, BH           // BH = uint8(v1.entry >> 8)
-	MOVBQZX AL, CX
-	SHLQ    CX, br_value     // value <<= n
-	ADDQ    CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off+2] = uint8(v2.entry >> 8)
-	// buf[stream][off+3] = uint8(v3.entry >> 8)
-	MOVW BX, 768+2(buffer)(off*1)
-
-	// update the bitrader reader structure
-	MOVB br_bits_read, bitReaderShifted_bitsRead(br3)
-	MOVQ br_value, bitReaderShifted_value(br3)
-	MOVQ br_offset, bitReaderShifted_off(br3)
-
-	ADDQ $4, off // off += 2
-
-	TESTB DH, DH // any br[i].ofs < 4?
-	JNZ   end
-
-	CMPQ off, $bufoff
-	JL   main_loop
-
-end:
-	MOVQ 0(SP), BP
-
-	MOVB off, ret+56(FP)
-	RET
-
-#undef off
-#undef buffer
-#undef table
-
-#undef br_bits_read
-#undef br_value
-#undef br_offset
-#undef peek_bits
-#undef exhausted
-
-#undef br0
-#undef br1
-#undef br2
-#undef br3
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in b/backend/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in
deleted file mode 100644
index 6d477a2c..00000000
--- a/backend/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in
+++ /dev/null
@@ -1,197 +0,0 @@
-// +build !appengine
-// +build gc
-// +build !noasm
-
-#include "textflag.h"
-#include "funcdata.h"
-#include "go_asm.h"
-
-
-#define bufoff      256     // see decompress.go, we're using [4][256]byte table
-
-//func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
-//	peekBits uint8, buf *byte, tbl *dEntrySingle) (int, bool)
-TEXT ·decompress4x_8b_loop_x86(SB), NOSPLIT, $8
-#define off             R8
-#define buffer          DI
-#define table           SI
-
-#define br_bits_read    R9
-#define br_value        R10
-#define br_offset       R11
-#define peek_bits       R12
-#define exhausted       DX
-
-#define br0             R13
-#define br1             R14
-#define br2             R15
-#define br3             BP
-
-    MOVQ    BP, 0(SP)
-
-    XORQ    exhausted, exhausted    // exhausted = false
-    XORQ    off, off                // off = 0
-
-    MOVBQZX peekBits+32(FP), peek_bits
-    MOVQ    buf+40(FP), buffer
-    MOVQ    tbl+48(FP), table
-
-    MOVQ    pbr0+0(FP), br0
-    MOVQ    pbr1+8(FP), br1
-    MOVQ    pbr2+16(FP), br2
-    MOVQ    pbr3+24(FP), br3
-
-main_loop:
-{{ define "decode_2_values_x86" }}
-    // const stream = {{ var "id" }}
-    // br{{ var "id"}}.fillFast()
-    MOVBQZX bitReaderShifted_bitsRead(br{{ var "id" }}), br_bits_read
-    MOVQ    bitReaderShifted_value(br{{ var "id" }}), br_value
-    MOVQ    bitReaderShifted_off(br{{ var "id" }}), br_offset
-
-	// if b.bitsRead >= 32 {
-    CMPQ    br_bits_read, $32
-    JB      skip_fill{{ var "id" }}
-
-    SUBQ    $32, br_bits_read       // b.bitsRead -= 32
-    SUBQ    $4, br_offset           // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-    MOVQ    bitReaderShifted_in(br{{ var "id" }}), AX
-    MOVL    0(br_offset)(AX*1), AX  // AX = uint32(b.in[b.off:b.off+4])
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-    MOVQ    br_bits_read, CX
-    SHLQ    CL, AX
-    ORQ     AX, br_value
-
-    // exhausted = exhausted || (br{{ var "id"}}.off < 4)
-    CMPQ    br_offset, $4
-    SETLT   DL
-    ORB     DL, DH
-    // }
-skip_fill{{ var "id" }}:
-
-    // val0 := br{{ var "id"}}.peekTopBits(peekBits)
-    MOVQ    br_value, AX
-    MOVQ    peek_bits, CX
-    SHRQ    CL, AX                  // AX = (value >> peek_bits) & mask
-
-    // v0 := table[val0&mask]
-    MOVW    0(table)(AX*2), AX      // AX - v0
-
-    // br{{ var "id"}}.advance(uint8(v0.entry))
-    MOVB    AH, BL                  // BL = uint8(v0.entry >> 8)
-    MOVBQZX AL, CX
-    SHLQ    CL, br_value            // value <<= n
-    ADDQ    CX, br_bits_read        // bits_read += n
-
-    // val1 := br{{ var "id"}}.peekTopBits(peekBits)
-    MOVQ    peek_bits, CX
-    MOVQ    br_value, AX
-    SHRQ    CL, AX                  // AX = (value >> peek_bits) & mask
-
-    // v1 := table[val1&mask]
-    MOVW    0(table)(AX*2), AX      // AX - v1
-
-    // br{{ var "id"}}.advance(uint8(v1.entry))
-    MOVB    AH, BH                  // BH = uint8(v1.entry >> 8)
-    MOVBQZX AL, CX
-    SHLQ    CX, br_value            // value <<= n
-    ADDQ    CX, br_bits_read        // bits_read += n
-
-
-    // these two writes get coalesced
-    // buf[stream][off] = uint8(v0.entry >> 8)
-    // buf[stream][off+1] = uint8(v1.entry >> 8)
-    MOVW    BX, {{ var "bufofs" }}(buffer)(off*1)
-
-    // SECOND PART:
-    // val2 := br{{ var "id"}}.peekTopBits(peekBits)
-    MOVQ    br_value, AX
-    MOVQ    peek_bits, CX
-    SHRQ    CL, AX                  // AX = (value >> peek_bits) & mask
-
-    // v2 := table[val0&mask]
-    MOVW    0(table)(AX*2), AX      // AX - v0
-
-    // br{{ var "id"}}.advance(uint8(v0.entry))
-    MOVB    AH, BL                  // BL = uint8(v0.entry >> 8)
-    MOVBQZX AL, CX
-    SHLQ    CL, br_value            // value <<= n
-    ADDQ    CX, br_bits_read        // bits_read += n
-
-    // val3 := br{{ var "id"}}.peekTopBits(peekBits)
-    MOVQ    peek_bits, CX
-    MOVQ    br_value, AX
-    SHRQ    CL, AX                  // AX = (value >> peek_bits) & mask
-
-    // v3 := table[val1&mask]
-    MOVW    0(table)(AX*2), AX      // AX - v1
-
-    // br{{ var "id"}}.advance(uint8(v1.entry))
-    MOVB    AH, BH                  // BH = uint8(v1.entry >> 8)
-    MOVBQZX AL, CX
-    SHLQ    CX, br_value            // value <<= n
-    ADDQ    CX, br_bits_read        // bits_read += n
-
-
-    // these two writes get coalesced
-    // buf[stream][off+2] = uint8(v2.entry >> 8)
-    // buf[stream][off+3] = uint8(v3.entry >> 8)
-    MOVW    BX, {{ var "bufofs" }}+2(buffer)(off*1)
-
-    // update the bitrader reader structure
-    MOVB    br_bits_read, bitReaderShifted_bitsRead(br{{ var "id" }})
-    MOVQ    br_value, bitReaderShifted_value(br{{ var "id" }})
-    MOVQ    br_offset, bitReaderShifted_off(br{{ var "id" }})
-{{ end }}
-
-    {{ set "id" "0" }}
-    {{ set "ofs" "0" }}
-    {{ set "bufofs" "0" }} {{/* id * bufoff */}}
-    {{ template "decode_2_values_x86" . }}
-
-    {{ set "id" "1" }}
-    {{ set "ofs" "8" }}
-    {{ set "bufofs" "256" }}
-    {{ template "decode_2_values_x86" . }}
-
-    {{ set "id" "2" }}
-    {{ set "ofs" "16" }}
-    {{ set "bufofs" "512" }}
-    {{ template "decode_2_values_x86" . }}
-
-    {{ set "id" "3" }}
-    {{ set "ofs" "24" }}
-    {{ set "bufofs" "768" }}
-    {{ template "decode_2_values_x86" . }}
-
-    ADDQ    $4, off     // off += 2
-
-    TESTB   DH, DH      // any br[i].ofs < 4?
-    JNZ     end
-
-    CMPQ    off, $bufoff
-    JL      main_loop
-end:
-    MOVQ    0(SP), BP
-
-    MOVB    off, ret+56(FP)
-    RET
-#undef  off
-#undef  buffer
-#undef  table
-
-#undef  br_bits_read
-#undef  br_value
-#undef  br_offset
-#undef  peek_bits
-#undef  exhausted
-
-#undef  br0
-#undef  br1
-#undef  br2
-#undef  br3
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.go b/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.go
deleted file mode 100644
index ce8e93bc..00000000
--- a/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.go
+++ /dev/null
@@ -1,181 +0,0 @@
-//go:build amd64 && !appengine && !noasm && gc
-// +build amd64,!appengine,!noasm,gc
-
-// This file contains the specialisation of Decoder.Decompress4X
-// that uses an asm implementation of its main loop.
-package huff0
-
-import (
-	"errors"
-	"fmt"
-)
-
-// decompress4x_main_loop_x86 is an x86 assembler implementation
-// of Decompress4X when tablelog > 8.
-//go:noescape
-func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
-	peekBits uint8, buf *byte, tbl *dEntrySingle) uint8
-
-// decompress4x_8b_loop_x86 is an x86 assembler implementation
-// of Decompress4X when tablelog <= 8 which decodes 4 entries
-// per loop.
-//go:noescape
-func decompress4x_8b_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
-	peekBits uint8, buf *byte, tbl *dEntrySingle) uint8
-
-// fallback8BitSize is the size where using Go version is faster.
-const fallback8BitSize = 800
-
-// Decompress4X will decompress a 4X encoded stream.
-// The length of the supplied input must match the end of a block exactly.
-// The *capacity* of the dst slice must match the destination size of
-// the uncompressed data exactly.
-func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
-	if len(d.dt.single) == 0 {
-		return nil, errors.New("no table loaded")
-	}
-	if len(src) < 6+(4*1) {
-		return nil, errors.New("input too small")
-	}
-
-	use8BitTables := d.actualTableLog <= 8
-	if cap(dst) < fallback8BitSize && use8BitTables {
-		return d.decompress4X8bit(dst, src)
-	}
-	var br [4]bitReaderShifted
-	// Decode "jump table"
-	start := 6
-	for i := 0; i < 3; i++ {
-		length := int(src[i*2]) | (int(src[i*2+1]) << 8)
-		if start+length >= len(src) {
-			return nil, errors.New("truncated input (or invalid offset)")
-		}
-		err := br[i].init(src[start : start+length])
-		if err != nil {
-			return nil, err
-		}
-		start += length
-	}
-	err := br[3].init(src[start:])
-	if err != nil {
-		return nil, err
-	}
-
-	// destination, offset to match first output
-	dstSize := cap(dst)
-	dst = dst[:dstSize]
-	out := dst
-	dstEvery := (dstSize + 3) / 4
-
-	const tlSize = 1 << tableLogMax
-	const tlMask = tlSize - 1
-	single := d.dt.single[:tlSize]
-
-	// Use temp table to avoid bound checks/append penalty.
-	buf := d.buffer()
-	var off uint8
-	var decoded int
-
-	const debug = false
-
-	// see: bitReaderShifted.peekBitsFast()
-	peekBits := uint8((64 - d.actualTableLog) & 63)
-
-	// Decode 2 values from each decoder/loop.
-	const bufoff = 256
-	for {
-		if br[0].off < 4 || br[1].off < 4 || br[2].off < 4 || br[3].off < 4 {
-			break
-		}
-
-		if use8BitTables {
-			off = decompress4x_8b_loop_x86(&br[0], &br[1], &br[2], &br[3], peekBits, &buf[0][0], &single[0])
-		} else {
-			off = decompress4x_main_loop_x86(&br[0], &br[1], &br[2], &br[3], peekBits, &buf[0][0], &single[0])
-		}
-		if debug {
-			fmt.Print("DEBUG: ")
-			fmt.Printf("off=%d,", off)
-			for i := 0; i < 4; i++ {
-				fmt.Printf(" br[%d]={bitsRead=%d, value=%x, off=%d}",
-					i, br[i].bitsRead, br[i].value, br[i].off)
-			}
-			fmt.Println("")
-		}
-
-		if off != 0 {
-			break
-		}
-
-		if bufoff > dstEvery {
-			d.bufs.Put(buf)
-			return nil, errors.New("corruption detected: stream overrun 1")
-		}
-		copy(out, buf[0][:])
-		copy(out[dstEvery:], buf[1][:])
-		copy(out[dstEvery*2:], buf[2][:])
-		copy(out[dstEvery*3:], buf[3][:])
-		out = out[bufoff:]
-		decoded += bufoff * 4
-		// There must at least be 3 buffers left.
-		if len(out) < dstEvery*3 {
-			d.bufs.Put(buf)
-			return nil, errors.New("corruption detected: stream overrun 2")
-		}
-	}
-	if off > 0 {
-		ioff := int(off)
-		if len(out) < dstEvery*3+ioff {
-			d.bufs.Put(buf)
-			return nil, errors.New("corruption detected: stream overrun 3")
-		}
-		copy(out, buf[0][:off])
-		copy(out[dstEvery:], buf[1][:off])
-		copy(out[dstEvery*2:], buf[2][:off])
-		copy(out[dstEvery*3:], buf[3][:off])
-		decoded += int(off) * 4
-		out = out[off:]
-	}
-
-	// Decode remaining.
-	remainBytes := dstEvery - (decoded / 4)
-	for i := range br {
-		offset := dstEvery * i
-		endsAt := offset + remainBytes
-		if endsAt > len(out) {
-			endsAt = len(out)
-		}
-		br := &br[i]
-		bitsLeft := br.remaining()
-		for bitsLeft > 0 {
-			br.fill()
-			if offset >= endsAt {
-				d.bufs.Put(buf)
-				return nil, errors.New("corruption detected: stream overrun 4")
-			}
-
-			// Read value and increment offset.
-			val := br.peekBitsFast(d.actualTableLog)
-			v := single[val&tlMask].entry
-			nBits := uint8(v)
-			br.advance(nBits)
-			bitsLeft -= uint(nBits)
-			out[offset] = uint8(v >> 8)
-			offset++
-		}
-		if offset != endsAt {
-			d.bufs.Put(buf)
-			return nil, fmt.Errorf("corruption detected: short output block %d, end %d != %d", i, offset, endsAt)
-		}
-		decoded += offset - dstEvery*i
-		err = br.close()
-		if err != nil {
-			return nil, err
-		}
-	}
-	d.bufs.Put(buf)
-	if dstSize != decoded {
-		return nil, errors.New("corruption detected: short output block")
-	}
-	return dst, nil
-}
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.s b/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.s
deleted file mode 100644
index 2edad3ea..00000000
--- a/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.s
+++ /dev/null
@@ -1,506 +0,0 @@
-// +build !appengine
-// +build gc
-// +build !noasm
-
-#include "textflag.h"
-#include "funcdata.h"
-#include "go_asm.h"
-
-#ifdef GOAMD64_v4
-#ifndef GOAMD64_v3
-#define GOAMD64_v3
-#endif
-#endif
-
-#define bufoff      256 // see decompress.go, we're using [4][256]byte table
-
-// func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
-//	peekBits uint8, buf *byte, tbl *dEntrySingle) (int, bool)
-TEXT ·decompress4x_main_loop_x86(SB), NOSPLIT, $8
-#define off             R8
-#define buffer          DI
-#define table           SI
-
-#define br_bits_read    R9
-#define br_value        R10
-#define br_offset       R11
-#define peek_bits       R12
-#define exhausted       DX
-
-#define br0             R13
-#define br1             R14
-#define br2             R15
-#define br3             BP
-
-	MOVQ BP, 0(SP)
-
-	XORQ exhausted, exhausted // exhausted = false
-	XORQ off, off             // off = 0
-
-	MOVBQZX peekBits+32(FP), peek_bits
-	MOVQ    buf+40(FP), buffer
-	MOVQ    tbl+48(FP), table
-
-	MOVQ pbr0+0(FP), br0
-	MOVQ pbr1+8(FP), br1
-	MOVQ pbr2+16(FP), br2
-	MOVQ pbr3+24(FP), br3
-
-main_loop:
-
-	// const stream = 0
-	// br0.fillFast()
-	MOVBQZX bitReaderShifted_bitsRead(br0), br_bits_read
-	MOVQ    bitReaderShifted_value(br0), br_value
-	MOVQ    bitReaderShifted_off(br0), br_offset
-
-	// We must have at least 2 * max tablelog left
-	CMPQ br_bits_read, $64-22
-	JBE  skip_fill0
-
-	SUBQ $32, br_bits_read // b.bitsRead -= 32
-	SUBQ $4, br_offset     // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-	MOVQ bitReaderShifted_in(br0), AX
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-#ifdef GOAMD64_v3
-	SHLXQ br_bits_read, 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4]) << (b.bitsRead & 63)
-
-#else
-	MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
-	MOVQ br_bits_read, CX
-	SHLQ CL, AX
-
-#endif
-
-	ORQ AX, br_value
-
-	// exhausted = exhausted || (br0.off < 4)
-	CMPQ  br_offset, $4
-	SETLT DL
-	ORB   DL, DH
-
-	// }
-skip_fill0:
-
-	// val0 := br0.peekTopBits(peekBits)
-#ifdef GOAMD64_v3
-	SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-
-#else
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-#endif
-
-	// v0 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br0.advance(uint8(v0.entry))
-	MOVB AH, BL // BL = uint8(v0.entry >> 8)
-
-#ifdef GOAMD64_v3
-	MOVBQZX AL, CX
-	SHLXQ   AX, br_value, br_value // value <<= n
-
-#else
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value // value <<= n
-
-#endif
-
-	ADDQ CX, br_bits_read // bits_read += n
-
-#ifdef GOAMD64_v3
-	SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-
-#else
-	// val1 := br0.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-#endif
-
-	// v1 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br0.advance(uint8(v1.entry))
-	MOVB AH, BH // BH = uint8(v1.entry >> 8)
-
-#ifdef GOAMD64_v3
-	MOVBQZX AL, CX
-	SHLXQ   AX, br_value, br_value // value <<= n
-
-#else
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value // value <<= n
-
-#endif
-
-	ADDQ CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off] = uint8(v0.entry >> 8)
-	// buf[stream][off+1] = uint8(v1.entry >> 8)
-	MOVW BX, 0(buffer)(off*1)
-
-	// update the bitrader reader structure
-	MOVB br_bits_read, bitReaderShifted_bitsRead(br0)
-	MOVQ br_value, bitReaderShifted_value(br0)
-	MOVQ br_offset, bitReaderShifted_off(br0)
-
-	// const stream = 1
-	// br1.fillFast()
-	MOVBQZX bitReaderShifted_bitsRead(br1), br_bits_read
-	MOVQ    bitReaderShifted_value(br1), br_value
-	MOVQ    bitReaderShifted_off(br1), br_offset
-
-	// We must have at least 2 * max tablelog left
-	CMPQ br_bits_read, $64-22
-	JBE  skip_fill1
-
-	SUBQ $32, br_bits_read // b.bitsRead -= 32
-	SUBQ $4, br_offset     // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-	MOVQ bitReaderShifted_in(br1), AX
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-#ifdef GOAMD64_v3
-	SHLXQ br_bits_read, 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4]) << (b.bitsRead & 63)
-
-#else
-	MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
-	MOVQ br_bits_read, CX
-	SHLQ CL, AX
-
-#endif
-
-	ORQ AX, br_value
-
-	// exhausted = exhausted || (br1.off < 4)
-	CMPQ  br_offset, $4
-	SETLT DL
-	ORB   DL, DH
-
-	// }
-skip_fill1:
-
-	// val0 := br1.peekTopBits(peekBits)
-#ifdef GOAMD64_v3
-	SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-
-#else
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-#endif
-
-	// v0 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br1.advance(uint8(v0.entry))
-	MOVB AH, BL // BL = uint8(v0.entry >> 8)
-
-#ifdef GOAMD64_v3
-	MOVBQZX AL, CX
-	SHLXQ   AX, br_value, br_value // value <<= n
-
-#else
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value // value <<= n
-
-#endif
-
-	ADDQ CX, br_bits_read // bits_read += n
-
-#ifdef GOAMD64_v3
-	SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-
-#else
-	// val1 := br1.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-#endif
-
-	// v1 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br1.advance(uint8(v1.entry))
-	MOVB AH, BH // BH = uint8(v1.entry >> 8)
-
-#ifdef GOAMD64_v3
-	MOVBQZX AL, CX
-	SHLXQ   AX, br_value, br_value // value <<= n
-
-#else
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value // value <<= n
-
-#endif
-
-	ADDQ CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off] = uint8(v0.entry >> 8)
-	// buf[stream][off+1] = uint8(v1.entry >> 8)
-	MOVW BX, 256(buffer)(off*1)
-
-	// update the bitrader reader structure
-	MOVB br_bits_read, bitReaderShifted_bitsRead(br1)
-	MOVQ br_value, bitReaderShifted_value(br1)
-	MOVQ br_offset, bitReaderShifted_off(br1)
-
-	// const stream = 2
-	// br2.fillFast()
-	MOVBQZX bitReaderShifted_bitsRead(br2), br_bits_read
-	MOVQ    bitReaderShifted_value(br2), br_value
-	MOVQ    bitReaderShifted_off(br2), br_offset
-
-	// We must have at least 2 * max tablelog left
-	CMPQ br_bits_read, $64-22
-	JBE  skip_fill2
-
-	SUBQ $32, br_bits_read // b.bitsRead -= 32
-	SUBQ $4, br_offset     // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-	MOVQ bitReaderShifted_in(br2), AX
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-#ifdef GOAMD64_v3
-	SHLXQ br_bits_read, 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4]) << (b.bitsRead & 63)
-
-#else
-	MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
-	MOVQ br_bits_read, CX
-	SHLQ CL, AX
-
-#endif
-
-	ORQ AX, br_value
-
-	// exhausted = exhausted || (br2.off < 4)
-	CMPQ  br_offset, $4
-	SETLT DL
-	ORB   DL, DH
-
-	// }
-skip_fill2:
-
-	// val0 := br2.peekTopBits(peekBits)
-#ifdef GOAMD64_v3
-	SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-
-#else
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-#endif
-
-	// v0 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br2.advance(uint8(v0.entry))
-	MOVB AH, BL // BL = uint8(v0.entry >> 8)
-
-#ifdef GOAMD64_v3
-	MOVBQZX AL, CX
-	SHLXQ   AX, br_value, br_value // value <<= n
-
-#else
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value // value <<= n
-
-#endif
-
-	ADDQ CX, br_bits_read // bits_read += n
-
-#ifdef GOAMD64_v3
-	SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-
-#else
-	// val1 := br2.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-#endif
-
-	// v1 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br2.advance(uint8(v1.entry))
-	MOVB AH, BH // BH = uint8(v1.entry >> 8)
-
-#ifdef GOAMD64_v3
-	MOVBQZX AL, CX
-	SHLXQ   AX, br_value, br_value // value <<= n
-
-#else
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value // value <<= n
-
-#endif
-
-	ADDQ CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off] = uint8(v0.entry >> 8)
-	// buf[stream][off+1] = uint8(v1.entry >> 8)
-	MOVW BX, 512(buffer)(off*1)
-
-	// update the bitrader reader structure
-	MOVB br_bits_read, bitReaderShifted_bitsRead(br2)
-	MOVQ br_value, bitReaderShifted_value(br2)
-	MOVQ br_offset, bitReaderShifted_off(br2)
-
-	// const stream = 3
-	// br3.fillFast()
-	MOVBQZX bitReaderShifted_bitsRead(br3), br_bits_read
-	MOVQ    bitReaderShifted_value(br3), br_value
-	MOVQ    bitReaderShifted_off(br3), br_offset
-
-	// We must have at least 2 * max tablelog left
-	CMPQ br_bits_read, $64-22
-	JBE  skip_fill3
-
-	SUBQ $32, br_bits_read // b.bitsRead -= 32
-	SUBQ $4, br_offset     // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-	MOVQ bitReaderShifted_in(br3), AX
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-#ifdef GOAMD64_v3
-	SHLXQ br_bits_read, 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4]) << (b.bitsRead & 63)
-
-#else
-	MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
-	MOVQ br_bits_read, CX
-	SHLQ CL, AX
-
-#endif
-
-	ORQ AX, br_value
-
-	// exhausted = exhausted || (br3.off < 4)
-	CMPQ  br_offset, $4
-	SETLT DL
-	ORB   DL, DH
-
-	// }
-skip_fill3:
-
-	// val0 := br3.peekTopBits(peekBits)
-#ifdef GOAMD64_v3
-	SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-
-#else
-	MOVQ br_value, AX
-	MOVQ peek_bits, CX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-#endif
-
-	// v0 := table[val0&mask]
-	MOVW 0(table)(AX*2), AX // AX - v0
-
-	// br3.advance(uint8(v0.entry))
-	MOVB AH, BL // BL = uint8(v0.entry >> 8)
-
-#ifdef GOAMD64_v3
-	MOVBQZX AL, CX
-	SHLXQ   AX, br_value, br_value // value <<= n
-
-#else
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value // value <<= n
-
-#endif
-
-	ADDQ CX, br_bits_read // bits_read += n
-
-#ifdef GOAMD64_v3
-	SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-
-#else
-	// val1 := br3.peekTopBits(peekBits)
-	MOVQ peek_bits, CX
-	MOVQ br_value, AX
-	SHRQ CL, AX        // AX = (value >> peek_bits) & mask
-
-#endif
-
-	// v1 := table[val1&mask]
-	MOVW 0(table)(AX*2), AX // AX - v1
-
-	// br3.advance(uint8(v1.entry))
-	MOVB AH, BH // BH = uint8(v1.entry >> 8)
-
-#ifdef GOAMD64_v3
-	MOVBQZX AL, CX
-	SHLXQ   AX, br_value, br_value // value <<= n
-
-#else
-	MOVBQZX AL, CX
-	SHLQ    CL, br_value // value <<= n
-
-#endif
-
-	ADDQ CX, br_bits_read // bits_read += n
-
-	// these two writes get coalesced
-	// buf[stream][off] = uint8(v0.entry >> 8)
-	// buf[stream][off+1] = uint8(v1.entry >> 8)
-	MOVW BX, 768(buffer)(off*1)
-
-	// update the bitrader reader structure
-	MOVB br_bits_read, bitReaderShifted_bitsRead(br3)
-	MOVQ br_value, bitReaderShifted_value(br3)
-	MOVQ br_offset, bitReaderShifted_off(br3)
-
-	ADDQ $2, off // off += 2
-
-	TESTB DH, DH // any br[i].ofs < 4?
-	JNZ   end
-
-	CMPQ off, $bufoff
-	JL   main_loop
-
-end:
-	MOVQ 0(SP), BP
-
-	MOVB off, ret+56(FP)
-	RET
-
-#undef off
-#undef buffer
-#undef table
-
-#undef br_bits_read
-#undef br_value
-#undef br_offset
-#undef peek_bits
-#undef exhausted
-
-#undef br0
-#undef br1
-#undef br2
-#undef br3
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.s.in b/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.s.in
deleted file mode 100644
index 330d86ae..00000000
--- a/backend/vendor/github.com/klauspost/compress/huff0/decompress_amd64.s.in
+++ /dev/null
@@ -1,195 +0,0 @@
-// +build !appengine
-// +build gc
-// +build !noasm
-
-#include "textflag.h"
-#include "funcdata.h"
-#include "go_asm.h"
-
-#ifdef GOAMD64_v4
-#ifndef GOAMD64_v3
-#define GOAMD64_v3
-#endif
-#endif
-
-#define bufoff      256     // see decompress.go, we're using [4][256]byte table
-
-//func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
-//	peekBits uint8, buf *byte, tbl *dEntrySingle) (int, bool)
-TEXT ·decompress4x_main_loop_x86(SB), NOSPLIT, $8
-#define off             R8
-#define buffer          DI
-#define table           SI
-
-#define br_bits_read    R9
-#define br_value        R10
-#define br_offset       R11
-#define peek_bits       R12
-#define exhausted       DX
-
-#define br0             R13
-#define br1             R14
-#define br2             R15
-#define br3             BP
-
-    MOVQ    BP, 0(SP)
-
-    XORQ    exhausted, exhausted    // exhausted = false
-    XORQ    off, off                // off = 0
-
-    MOVBQZX peekBits+32(FP), peek_bits
-    MOVQ    buf+40(FP), buffer
-    MOVQ    tbl+48(FP), table
-
-    MOVQ    pbr0+0(FP), br0
-    MOVQ    pbr1+8(FP), br1
-    MOVQ    pbr2+16(FP), br2
-    MOVQ    pbr3+24(FP), br3
-
-main_loop:
-{{ define "decode_2_values_x86" }}
-    // const stream = {{ var "id" }}
-    // br{{ var "id"}}.fillFast()
-    MOVBQZX bitReaderShifted_bitsRead(br{{ var "id" }}), br_bits_read
-    MOVQ    bitReaderShifted_value(br{{ var "id" }}), br_value
-    MOVQ    bitReaderShifted_off(br{{ var "id" }}), br_offset
-
-    // We must have at least 2 * max tablelog left
-    CMPQ    br_bits_read, $64-22
-    JBE     skip_fill{{ var "id" }}
-
-    SUBQ    $32, br_bits_read       // b.bitsRead -= 32
-    SUBQ    $4, br_offset           // b.off -= 4
-
-	// v := b.in[b.off-4 : b.off]
-	// v = v[:4]
-	// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
-    MOVQ    bitReaderShifted_in(br{{ var "id" }}), AX
-
-	// b.value |= uint64(low) << (b.bitsRead & 63)
-#ifdef GOAMD64_v3
-    SHLXQ   br_bits_read, 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4]) << (b.bitsRead & 63)
-#else
-    MOVL    0(br_offset)(AX*1), AX  // AX = uint32(b.in[b.off:b.off+4])
-    MOVQ    br_bits_read, CX
-    SHLQ    CL, AX
-#endif
-
-    ORQ     AX, br_value
-
-    // exhausted = exhausted || (br{{ var "id"}}.off < 4)
-    CMPQ    br_offset, $4
-    SETLT   DL
-    ORB     DL, DH
-    // }
-skip_fill{{ var "id" }}:
-
-    // val0 := br{{ var "id"}}.peekTopBits(peekBits)
-#ifdef GOAMD64_v3
-    SHRXQ   peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
-#else
-    MOVQ    br_value, AX
-    MOVQ    peek_bits, CX
-    SHRQ    CL, AX                  // AX = (value >> peek_bits) & mask
-#endif
-
-    // v0 := table[val0&mask]
-    MOVW    0(table)(AX*2), AX      // AX - v0
-
-    // br{{ var "id"}}.advance(uint8(v0.entry))
-    MOVB    AH, BL                  // BL = uint8(v0.entry >> 8)
-
-#ifdef GOAMD64_v3
-    MOVBQZX AL, CX
-    SHLXQ   AX, br_value, br_value // value <<= n
-#else
-    MOVBQZX AL, CX
-    SHLQ    CL, br_value            // value <<= n
-#endif
-
-    ADDQ    CX, br_bits_read        // bits_read += n
-
-
-#ifdef GOAMD64_v3
-    SHRXQ    peek_bits, br_value, AX  // AX = (value >> peek_bits) & mask
-#else
-    // val1 := br{{ var "id"}}.peekTopBits(peekBits)
-    MOVQ    peek_bits, CX
-    MOVQ    br_value, AX
-    SHRQ    CL, AX                  // AX = (value >> peek_bits) & mask
-#endif
-
-    // v1 := table[val1&mask]
-    MOVW    0(table)(AX*2), AX      // AX - v1
-
-    // br{{ var "id"}}.advance(uint8(v1.entry))
-    MOVB    AH, BH                  // BH = uint8(v1.entry >> 8)
-
-#ifdef GOAMD64_v3
-    MOVBQZX AL, CX
-    SHLXQ   AX, br_value, br_value // value <<= n
-#else
-    MOVBQZX AL, CX
-    SHLQ    CL, br_value            // value <<= n
-#endif
-
-    ADDQ    CX, br_bits_read        // bits_read += n
-
-
-    // these two writes get coalesced
-    // buf[stream][off] = uint8(v0.entry >> 8)
-    // buf[stream][off+1] = uint8(v1.entry >> 8)
-    MOVW    BX, {{ var "bufofs" }}(buffer)(off*1)
-
-    // update the bitrader reader structure
-    MOVB    br_bits_read, bitReaderShifted_bitsRead(br{{ var "id" }})
-    MOVQ    br_value, bitReaderShifted_value(br{{ var "id" }})
-    MOVQ    br_offset, bitReaderShifted_off(br{{ var "id" }})
-{{ end }}
-
-    {{ set "id" "0" }}
-    {{ set "ofs" "0" }}
-    {{ set "bufofs" "0" }} {{/* id * bufoff */}}
-    {{ template "decode_2_values_x86" . }}
-
-    {{ set "id" "1" }}
-    {{ set "ofs" "8" }}
-    {{ set "bufofs" "256" }}
-    {{ template "decode_2_values_x86" . }}
-
-    {{ set "id" "2" }}
-    {{ set "ofs" "16" }}
-    {{ set "bufofs" "512" }}
-    {{ template "decode_2_values_x86" . }}
-
-    {{ set "id" "3" }}
-    {{ set "ofs" "24" }}
-    {{ set "bufofs" "768" }}
-    {{ template "decode_2_values_x86" . }}
-
-    ADDQ    $2, off     // off += 2
-
-    TESTB   DH, DH      // any br[i].ofs < 4?
-    JNZ     end
-
-    CMPQ    off, $bufoff
-    JL      main_loop
-end:
-    MOVQ    0(SP), BP
-
-    MOVB    off, ret+56(FP)
-    RET
-#undef  off
-#undef  buffer
-#undef  table
-
-#undef  br_bits_read
-#undef  br_value
-#undef  br_offset
-#undef  peek_bits
-#undef  exhausted
-
-#undef  br0
-#undef  br1
-#undef  br2
-#undef  br3
diff --git a/backend/vendor/github.com/klauspost/compress/huff0/decompress_generic.go b/backend/vendor/github.com/klauspost/compress/huff0/decompress_generic.go
deleted file mode 100644
index 126b4d68..00000000
--- a/backend/vendor/github.com/klauspost/compress/huff0/decompress_generic.go
+++ /dev/null
@@ -1,193 +0,0 @@
-//go:build !amd64 || appengine || !gc || noasm
-// +build !amd64 appengine !gc noasm
-
-// This file contains a generic implementation of Decoder.Decompress4X.
-package huff0
-
-import (
-	"errors"
-	"fmt"
-)
-
-// Decompress4X will decompress a 4X encoded stream.
-// The length of the supplied input must match the end of a block exactly.
-// The *capacity* of the dst slice must match the destination size of
-// the uncompressed data exactly.
-func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
-	if len(d.dt.single) == 0 {
-		return nil, errors.New("no table loaded")
-	}
-	if len(src) < 6+(4*1) {
-		return nil, errors.New("input too small")
-	}
-	if use8BitTables && d.actualTableLog <= 8 {
-		return d.decompress4X8bit(dst, src)
-	}
-
-	var br [4]bitReaderShifted
-	// Decode "jump table"
-	start := 6
-	for i := 0; i < 3; i++ {
-		length := int(src[i*2]) | (int(src[i*2+1]) << 8)
-		if start+length >= len(src) {
-			return nil, errors.New("truncated input (or invalid offset)")
-		}
-		err := br[i].init(src[start : start+length])
-		if err != nil {
-			return nil, err
-		}
-		start += length
-	}
-	err := br[3].init(src[start:])
-	if err != nil {
-		return nil, err
-	}
-
-	// destination, offset to match first output
-	dstSize := cap(dst)
-	dst = dst[:dstSize]
-	out := dst
-	dstEvery := (dstSize + 3) / 4
-
-	const tlSize = 1 << tableLogMax
-	const tlMask = tlSize - 1
-	single := d.dt.single[:tlSize]
-
-	// Use temp table to avoid bound checks/append penalty.
-	buf := d.buffer()
-	var off uint8
-	var decoded int
-
-	// Decode 2 values from each decoder/loop.
-	const bufoff = 256
-	for {
-		if br[0].off < 4 || br[1].off < 4 || br[2].off < 4 || br[3].off < 4 {
-			break
-		}
-
-		{
-			const stream = 0
-			const stream2 = 1
-			br[stream].fillFast()
-			br[stream2].fillFast()
-
-			val := br[stream].peekBitsFast(d.actualTableLog)
-			val2 := br[stream2].peekBitsFast(d.actualTableLog)
-			v := single[val&tlMask]
-			v2 := single[val2&tlMask]
-			br[stream].advance(uint8(v.entry))
-			br[stream2].advance(uint8(v2.entry))
-			buf[stream][off] = uint8(v.entry >> 8)
-			buf[stream2][off] = uint8(v2.entry >> 8)
-
-			val = br[stream].peekBitsFast(d.actualTableLog)
-			val2 = br[stream2].peekBitsFast(d.actualTableLog)
-			v = single[val&tlMask]
-			v2 = single[val2&tlMask]
-			br[stream].advance(uint8(v.entry))
-			br[stream2].advance(uint8(v2.entry))
-			buf[stream][off+1] = uint8(v.entry >> 8)
-			buf[stream2][off+1] = uint8(v2.entry >> 8)
-		}
-
-		{
-			const stream = 2
-			const stream2 = 3
-			br[stream].fillFast()
-			br[stream2].fillFast()
-
-			val := br[stream].peekBitsFast(d.actualTableLog)
-			val2 := br[stream2].peekBitsFast(d.actualTableLog)
-			v := single[val&tlMask]
-			v2 := single[val2&tlMask]
-			br[stream].advance(uint8(v.entry))
-			br[stream2].advance(uint8(v2.entry))
-			buf[stream][off] = uint8(v.entry >> 8)
-			buf[stream2][off] = uint8(v2.entry >> 8)
-
-			val = br[stream].peekBitsFast(d.actualTableLog)
-			val2 = br[stream2].peekBitsFast(d.actualTableLog)
-			v = single[val&tlMask]
-			v2 = single[val2&tlMask]
-			br[stream].advance(uint8(v.entry))
-			br[stream2].advance(uint8(v2.entry))
-			buf[stream][off+1] = uint8(v.entry >> 8)
-			buf[stream2][off+1] = uint8(v2.entry >> 8)
-		}
-
-		off += 2
-
-		if off == 0 {
-			if bufoff > dstEvery {
-				d.bufs.Put(buf)
-				return nil, errors.New("corruption detected: stream overrun 1")
-			}
-			copy(out, buf[0][:])
-			copy(out[dstEvery:], buf[1][:])
-			copy(out[dstEvery*2:], buf[2][:])
-			copy(out[dstEvery*3:], buf[3][:])
-			out = out[bufoff:]
-			decoded += bufoff * 4
-			// There must at least be 3 buffers left.
-			if len(out) < dstEvery*3 {
-				d.bufs.Put(buf)
-				return nil, errors.New("corruption detected: stream overrun 2")
-			}
-		}
-	}
-	if off > 0 {
-		ioff := int(off)
-		if len(out) < dstEvery*3+ioff {
-			d.bufs.Put(buf)
-			return nil, errors.New("corruption detected: stream overrun 3")
-		}
-		copy(out, buf[0][:off])
-		copy(out[dstEvery:], buf[1][:off])
-		copy(out[dstEvery*2:], buf[2][:off])
-		copy(out[dstEvery*3:], buf[3][:off])
-		decoded += int(off) * 4
-		out = out[off:]
-	}
-
-	// Decode remaining.
-	remainBytes := dstEvery - (decoded / 4)
-	for i := range br {
-		offset := dstEvery * i
-		endsAt := offset + remainBytes
-		if endsAt > len(out) {
-			endsAt = len(out)
-		}
-		br := &br[i]
-		bitsLeft := br.remaining()
-		for bitsLeft > 0 {
-			br.fill()
-			if offset >= endsAt {
-				d.bufs.Put(buf)
-				return nil, errors.New("corruption detected: stream overrun 4")
-			}
-
-			// Read value and increment offset.
-			val := br.peekBitsFast(d.actualTableLog)
-			v := single[val&tlMask].entry
-			nBits := uint8(v)
-			br.advance(nBits)
-			bitsLeft -= uint(nBits)
-			out[offset] = uint8(v >> 8)
-			offset++
-		}
-		if offset != endsAt {
-			d.bufs.Put(buf)
-			return nil, fmt.Errorf("corruption detected: short output block %d, end %d != %d", i, offset, endsAt)
-		}
-		decoded += offset - dstEvery*i
-		err = br.close()
-		if err != nil {
-			return nil, err
-		}
-	}
-	d.bufs.Put(buf)
-	if dstSize != decoded {
-		return nil, errors.New("corruption detected: short output block")
-	}
-	return dst, nil
-}
diff --git a/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo.go b/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo.go
deleted file mode 100644
index 3954c512..00000000
--- a/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo.go
+++ /dev/null
@@ -1,34 +0,0 @@
-// Package cpuinfo gives runtime info about the current CPU.
-//
-// This is a very limited module meant for use internally
-// in this project. For more versatile solution check
-// https://github.com/klauspost/cpuid.
-package cpuinfo
-
-// HasBMI1 checks whether an x86 CPU supports the BMI1 extension.
-func HasBMI1() bool {
-	return hasBMI1
-}
-
-// HasBMI2 checks whether an x86 CPU supports the BMI2 extension.
-func HasBMI2() bool {
-	return hasBMI2
-}
-
-// DisableBMI2 will disable BMI2, for testing purposes.
-// Call returned function to restore previous state.
-func DisableBMI2() func() {
-	old := hasBMI2
-	hasBMI2 = false
-	return func() {
-		hasBMI2 = old
-	}
-}
-
-// HasBMI checks whether an x86 CPU supports both BMI1 and BMI2 extensions.
-func HasBMI() bool {
-	return HasBMI1() && HasBMI2()
-}
-
-var hasBMI1 bool
-var hasBMI2 bool
diff --git a/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo_amd64.go b/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo_amd64.go
deleted file mode 100644
index e802579c..00000000
--- a/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo_amd64.go
+++ /dev/null
@@ -1,11 +0,0 @@
-//go:build amd64 && !appengine && !noasm && gc
-// +build amd64,!appengine,!noasm,gc
-
-package cpuinfo
-
-// go:noescape
-func x86extensions() (bmi1, bmi2 bool)
-
-func init() {
-	hasBMI1, hasBMI2 = x86extensions()
-}
diff --git a/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo_amd64.s b/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo_amd64.s
deleted file mode 100644
index 4465fbe9..00000000
--- a/backend/vendor/github.com/klauspost/compress/internal/cpuinfo/cpuinfo_amd64.s
+++ /dev/null
@@ -1,36 +0,0 @@
-// +build !appengine
-// +build gc
-// +build !noasm
-
-#include "textflag.h"
-#include "funcdata.h"
-#include "go_asm.h"
-
-TEXT ·x86extensions(SB), NOSPLIT, $0
-	// 1. determine max EAX value
-	XORQ AX, AX
-	CPUID
-
-	CMPQ AX, $7
-	JB   unsupported
-
-	// 2. EAX = 7, ECX = 0 --- see Table 3-8 "Information Returned by CPUID Instruction"
-	MOVQ $7, AX
-	MOVQ $0, CX
-	CPUID
-
-	BTQ   $3, BX // bit 3 = BMI1
-	SETCS AL
-
-	BTQ   $8, BX // bit 8 = BMI2
-	SETCS AH
-
-	MOVB AL, bmi1+0(FP)
-	MOVB AH, bmi2+1(FP)
-	RET
-
-unsupported:
-	XORQ AX, AX
-	MOVB AL, bmi1+0(FP)
-	MOVB AL, bmi2+1(FP)
-	RET
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/README.md b/backend/vendor/github.com/klauspost/compress/zstd/README.md
index beb7fa87..c876c591 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/README.md
+++ b/backend/vendor/github.com/klauspost/compress/zstd/README.md
@@ -153,10 +153,10 @@ http://sun.aei.polsl.pl/~sdeor/corpus/silesia.zip
 
 This package:
 file    out     level   insize      outsize     millis  mb/s
-silesia.tar zskp    1   211947520   73821326    634     318.47
-silesia.tar zskp    2   211947520   67655404    1508    133.96
-silesia.tar zskp    3   211947520   64746933    3000    67.37
-silesia.tar zskp    4   211947520   60073508    16926   11.94
+silesia.tar zskp    1   211947520   73101992    643     313.87
+silesia.tar zskp    2   211947520   67504318    969     208.38
+silesia.tar zskp    3   211947520   64595893    2007    100.68
+silesia.tar zskp    4   211947520   60995370    8825    22.90
 
 cgo zstd:
 silesia.tar zstd    1   211947520   73605392    543     371.56
@@ -165,94 +165,94 @@ silesia.tar zstd    6   211947520   62916450    1913    105.66
 silesia.tar zstd    9   211947520   60212393    5063    39.92
 
 gzip, stdlib/this package:
-silesia.tar gzstd   1   211947520   80007735    1498    134.87
-silesia.tar gzkp    1   211947520   80088272    1009    200.31
+silesia.tar gzstd   1   211947520   80007735    1654    122.21
+silesia.tar gzkp    1   211947520   80136201    1152    175.45
 
 GOB stream of binary data. Highly compressible.
 https://files.klauspost.com/compress/gob-stream.7z
 
 file        out     level   insize  outsize     millis  mb/s
-gob-stream  zskp    1   1911399616  233948096   3230    564.34
-gob-stream  zskp    2   1911399616  203997694   4997    364.73
-gob-stream  zskp    3   1911399616  173526523   13435   135.68
-gob-stream  zskp    4   1911399616  162195235   47559   38.33
+gob-stream  zskp    1   1911399616  235022249   3088    590.30
+gob-stream  zskp    2   1911399616  205669791   3786    481.34
+gob-stream  zskp    3   1911399616  175034659   9636    189.17
+gob-stream  zskp    4   1911399616  165609838   50369   36.19
 
 gob-stream  zstd    1   1911399616  249810424   2637    691.26
 gob-stream  zstd    3   1911399616  208192146   3490    522.31
 gob-stream  zstd    6   1911399616  193632038   6687    272.56
 gob-stream  zstd    9   1911399616  177620386   16175   112.70
 
-gob-stream  gzstd   1   1911399616  357382013   9046    201.49
-gob-stream  gzkp    1   1911399616  359136669   4885    373.08
+gob-stream  gzstd   1   1911399616  357382641   10251   177.82
+gob-stream  gzkp    1   1911399616  359753026   5438    335.20
 
 The test data for the Large Text Compression Benchmark is the first
 10^9 bytes of the English Wikipedia dump on Mar. 3, 2006.
 http://mattmahoney.net/dc/textdata.html
 
 file    out level   insize      outsize     millis  mb/s
-enwik9  zskp    1   1000000000  343833605   3687    258.64
-enwik9  zskp    2   1000000000  317001237   7672    124.29
-enwik9  zskp    3   1000000000  291915823   15923   59.89
-enwik9  zskp    4   1000000000  261710291   77697   12.27
+enwik9  zskp    1   1000000000  343848582   3609    264.18
+enwik9  zskp    2   1000000000  317276632   5746    165.97
+enwik9  zskp    3   1000000000  292243069   12162   78.41
+enwik9  zskp    4   1000000000  262183768   82837   11.51
 
 enwik9  zstd    1   1000000000  358072021   3110    306.65
 enwik9  zstd    3   1000000000  313734672   4784    199.35
 enwik9  zstd    6   1000000000  295138875   10290   92.68
 enwik9  zstd    9   1000000000  278348700   28549   33.40
 
-enwik9  gzstd   1   1000000000  382578136   8608    110.78
-enwik9  gzkp    1   1000000000  382781160   5628    169.45
+enwik9  gzstd   1   1000000000  382578136   9604    99.30
+enwik9  gzkp    1   1000000000  383825945   6544    145.73
 
 Highly compressible JSON file.
 https://files.klauspost.com/compress/github-june-2days-2019.json.zst
 
 file                        out level   insize      outsize     millis  mb/s
-github-june-2days-2019.json zskp    1   6273951764  697439532   9789    611.17
-github-june-2days-2019.json zskp    2   6273951764  610876538   18553   322.49
-github-june-2days-2019.json zskp    3   6273951764  517662858   44186   135.41
-github-june-2days-2019.json zskp    4   6273951764  464617114   165373  36.18
+github-june-2days-2019.json zskp    1   6273951764  699045015   10620   563.40
+github-june-2days-2019.json zskp    2   6273951764  617881763   11687   511.96
+github-june-2days-2019.json zskp    3   6273951764  524340691   34043   175.75
+github-june-2days-2019.json zskp    4   6273951764  470320075   170190  35.16
 
 github-june-2days-2019.json zstd    1   6273951764  766284037   8450    708.00
 github-june-2days-2019.json zstd    3   6273951764  661889476   10927   547.57
 github-june-2days-2019.json zstd    6   6273951764  642756859   22996   260.18
 github-june-2days-2019.json zstd    9   6273951764  601974523   52413   114.16
 
-github-june-2days-2019.json gzstd   1   6273951764  1164397768  26793   223.32
-github-june-2days-2019.json gzkp    1   6273951764  1120631856  17693   338.16
+github-june-2days-2019.json gzstd   1   6273951764  1164400847  29948   199.79
+github-june-2days-2019.json gzkp    1   6273951764  1125417694  21788   274.61
 
 VM Image, Linux mint with a few installed applications:
 https://files.klauspost.com/compress/rawstudio-mint14.7z
 
 file                    out level   insize      outsize     millis  mb/s
-rawstudio-mint14.tar    zskp    1   8558382592  3718400221  18206   448.29
-rawstudio-mint14.tar    zskp    2   8558382592  3326118337  37074   220.15
-rawstudio-mint14.tar    zskp    3   8558382592  3163842361  87306   93.49
-rawstudio-mint14.tar    zskp    4   8558382592  2970480650  783862  10.41
+rawstudio-mint14.tar    zskp    1   8558382592  3667489370  20210   403.84
+rawstudio-mint14.tar    zskp    2   8558382592  3364592300  31873   256.07
+rawstudio-mint14.tar    zskp    3   8558382592  3158085214  77675   105.08
+rawstudio-mint14.tar    zskp    4   8558382592  2965110639  857750  9.52
 
 rawstudio-mint14.tar    zstd    1   8558382592  3609250104  17136   476.27
 rawstudio-mint14.tar    zstd    3   8558382592  3341679997  29262   278.92
 rawstudio-mint14.tar    zstd    6   8558382592  3235846406  77904   104.77
 rawstudio-mint14.tar    zstd    9   8558382592  3160778861  140946  57.91
 
-rawstudio-mint14.tar    gzstd   1   8558382592  3926234992  51345   158.96
-rawstudio-mint14.tar    gzkp    1   8558382592  3960117298  36722   222.26
+rawstudio-mint14.tar    gzstd   1   8558382592  3926257486  57722   141.40
+rawstudio-mint14.tar    gzkp    1   8558382592  3962605659  45113   180.92
 
 CSV data:
 https://files.klauspost.com/compress/nyc-taxi-data-10M.csv.zst
 
 file                    out level   insize      outsize     millis  mb/s
-nyc-taxi-data-10M.csv   zskp    1   3325605752  641319332   9462    335.17
-nyc-taxi-data-10M.csv   zskp    2   3325605752  588976126   17570   180.50
-nyc-taxi-data-10M.csv   zskp    3   3325605752  529329260   32432   97.79
-nyc-taxi-data-10M.csv   zskp    4   3325605752  474949772   138025  22.98
+nyc-taxi-data-10M.csv   zskp    1   3325605752  641339945   8925    355.35
+nyc-taxi-data-10M.csv   zskp    2   3325605752  591748091   11268   281.44
+nyc-taxi-data-10M.csv   zskp    3   3325605752  530289687   25239   125.66
+nyc-taxi-data-10M.csv   zskp    4   3325605752  476268884   135958  23.33
 
 nyc-taxi-data-10M.csv   zstd    1   3325605752  687399637   8233    385.18
 nyc-taxi-data-10M.csv   zstd    3   3325605752  598514411   10065   315.07
 nyc-taxi-data-10M.csv   zstd    6   3325605752  570522953   20038   158.27
 nyc-taxi-data-10M.csv   zstd    9   3325605752  517554797   64565   49.12
 
-nyc-taxi-data-10M.csv   gzstd   1   3325605752  928654908   21270   149.11
-nyc-taxi-data-10M.csv   gzkp    1   3325605752  922273214   13929   227.68
+nyc-taxi-data-10M.csv   gzstd   1   3325605752  928656485   23876   132.83
+nyc-taxi-data-10M.csv   gzkp    1   3325605752  922257165   16780   189.00
 ```
 
 ## Decompressor
@@ -386,31 +386,47 @@ In practice this means that concurrency is often limited to utilizing about 3 co
   
 ### Benchmarks
 
+These are some examples of performance compared to [datadog cgo library](https://github.com/DataDog/zstd).
+
 The first two are streaming decodes and the last are smaller inputs. 
-
-Running on AMD Ryzen 9 3950X 16-Core Processor. AMD64 assembly used.
-
+ 
 ```
-BenchmarkDecoderSilesia-32    	                   5	 206878840 ns/op	1024.50 MB/s	   49808 B/op	      43 allocs/op
-BenchmarkDecoderEnwik9-32                          1	1271809000 ns/op	 786.28 MB/s	   72048 B/op	      52 allocs/op
+BenchmarkDecoderSilesia-8                          3     385000067 ns/op     550.51 MB/s        5498 B/op          8 allocs/op
+BenchmarkDecoderSilesiaCgo-8                       6     197666567 ns/op    1072.25 MB/s      270672 B/op          8 allocs/op
 
-Concurrent blocks, performance:
+BenchmarkDecoderEnwik9-8                           1    2027001600 ns/op     493.34 MB/s       10496 B/op         18 allocs/op
+BenchmarkDecoderEnwik9Cgo-8                        2     979499200 ns/op    1020.93 MB/s      270672 B/op          8 allocs/op
 
-BenchmarkDecoder_DecodeAllParallel/kppkn.gtb.zst-32         	   67356	     17857 ns/op	10321.96 MB/s	        22.48 pct	     102 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/geo.protodata.zst-32     	  266656	      4421 ns/op	26823.21 MB/s	        11.89 pct	      19 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/plrabn12.txt.zst-32      	   20992	     56842 ns/op	8477.17 MB/s	        39.90 pct	     754 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/lcet10.txt.zst-32        	   27456	     43932 ns/op	9714.01 MB/s	        33.27 pct	     524 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/asyoulik.txt.zst-32      	   78432	     15047 ns/op	8319.15 MB/s	        40.34 pct	      66 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/alice29.txt.zst-32       	   65800	     18436 ns/op	8249.63 MB/s	        37.75 pct	      88 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/html_x_4.zst-32          	  102993	     11523 ns/op	35546.09 MB/s	         3.637 pct	     143 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/paper-100k.pdf.zst-32    	 1000000	      1070 ns/op	95720.98 MB/s	        80.53 pct	       3 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/fireworks.jpeg.zst-32    	  749802	      1752 ns/op	70272.35 MB/s	       100.0 pct	       5 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/urls.10K.zst-32          	   22640	     52934 ns/op	13263.37 MB/s	        26.25 pct	    1014 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/html.zst-32              	  226412	      5232 ns/op	19572.27 MB/s	        14.49 pct	      20 B/op	       0 allocs/op
-BenchmarkDecoder_DecodeAllParallel/comp-data.bin.zst-32     	  923041	      1276 ns/op	3194.71 MB/s	        31.26 pct	       0 B/op	       0 allocs/op
+Concurrent performance:
+
+BenchmarkDecoder_DecodeAllParallel/kppkn.gtb.zst-16                28915         42469 ns/op    4340.07 MB/s         114 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/geo.protodata.zst-16           116505          9965 ns/op    11900.16 MB/s         16 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/plrabn12.txt.zst-16              8952        134272 ns/op    3588.70 MB/s         915 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/lcet10.txt.zst-16               11820        102538 ns/op    4161.90 MB/s         594 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/asyoulik.txt.zst-16             34782         34184 ns/op    3661.88 MB/s          60 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/alice29.txt.zst-16              27712         43447 ns/op    3500.58 MB/s          99 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/html_x_4.zst-16                 62826         18750 ns/op    21845.10 MB/s        104 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/paper-100k.pdf.zst-16          631545          1794 ns/op    57078.74 MB/s          2 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/fireworks.jpeg.zst-16         1690140           712 ns/op    172938.13 MB/s         1 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/urls.10K.zst-16                 10432        113593 ns/op    6180.73 MB/s        1143 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/html.zst-16                    113206         10671 ns/op    9596.27 MB/s          15 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallel/comp-data.bin.zst-16          1530615           779 ns/op    5229.49 MB/s           0 B/op          0 allocs/op
+
+BenchmarkDecoder_DecodeAllParallelCgo/kppkn.gtb.zst-16             65217         16192 ns/op    11383.34 MB/s         46 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/geo.protodata.zst-16        292671          4039 ns/op    29363.19 MB/s          6 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/plrabn12.txt.zst-16          26314         46021 ns/op    10470.43 MB/s        293 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/lcet10.txt.zst-16            33897         34900 ns/op    12227.96 MB/s        205 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/asyoulik.txt.zst-16         104348         11433 ns/op    10949.01 MB/s         20 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/alice29.txt.zst-16           75949         15510 ns/op    9805.60 MB/s          32 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/html_x_4.zst-16             173910          6756 ns/op    60624.29 MB/s         37 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/paper-100k.pdf.zst-16       923076          1339 ns/op    76474.87 MB/s          1 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/fireworks.jpeg.zst-16       922920          1351 ns/op    91102.57 MB/s          2 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/urls.10K.zst-16              27649         43618 ns/op    16096.19 MB/s        407 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/html.zst-16                 279073          4160 ns/op    24614.18 MB/s          6 B/op          0 allocs/op
+BenchmarkDecoder_DecodeAllParallelCgo/comp-data.bin.zst-16        749938          1579 ns/op    2581.71 MB/s           0 B/op          0 allocs/op
 ```
 
-This reflects the performance around May 2022, but this may be out of date.
+This reflects the performance around May 2020, but this may be out of date.
 
 ## Zstd inside ZIP files
 
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/blockdec.go b/backend/vendor/github.com/klauspost/compress/zstd/blockdec.go
index b2bca330..607b62ee 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/blockdec.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/blockdec.go
@@ -5,14 +5,9 @@
 package zstd
 
 import (
-	"bytes"
-	"encoding/binary"
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
 	"sync"
 
 	"github.com/klauspost/compress/huff0"
@@ -43,9 +38,6 @@ const (
 	// maxCompressedBlockSize is the biggest allowed compressed block size (128KB)
 	maxCompressedBlockSize = 128 << 10
 
-	compressedBlockOverAlloc    = 16
-	maxCompressedBlockSizeAlloc = 128<<10 + compressedBlockOverAlloc
-
 	// Maximum possible block size (all Raw+Uncompressed).
 	maxBlockSize = (1 << 21) - 1
 
@@ -144,7 +136,7 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 	b.Type = blockType((bh >> 1) & 3)
 	// find size.
 	cSize := int(bh >> 3)
-	maxSize := maxCompressedBlockSizeAlloc
+	maxSize := maxBlockSize
 	switch b.Type {
 	case blockTypeReserved:
 		return ErrReservedBlockType
@@ -165,9 +157,9 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 			println("Data size on stream:", cSize)
 		}
 		b.RLESize = 0
-		maxSize = maxCompressedBlockSizeAlloc
+		maxSize = maxCompressedBlockSize
 		if windowSize < maxCompressedBlockSize && b.lowMem {
-			maxSize = int(windowSize) + compressedBlockOverAlloc
+			maxSize = int(windowSize)
 		}
 		if cSize > maxCompressedBlockSize || uint64(cSize) > b.WindowSize {
 			if debugDecoder {
@@ -175,11 +167,6 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 			}
 			return ErrCompressedSizeTooBig
 		}
-		// Empty compressed blocks must at least be 2 bytes
-		// for Literals_Block_Type and one for Sequences_Section_Header.
-		if cSize < 2 {
-			return ErrBlockTooSmall
-		}
 	case blockTypeRaw:
 		if cSize > maxCompressedBlockSize || cSize > int(b.WindowSize) {
 			if debugDecoder {
@@ -198,9 +185,9 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 	// Read block data.
 	if cap(b.dataStorage) < cSize {
 		if b.lowMem || cSize > maxCompressedBlockSize {
-			b.dataStorage = make([]byte, 0, cSize+compressedBlockOverAlloc)
+			b.dataStorage = make([]byte, 0, cSize)
 		} else {
-			b.dataStorage = make([]byte, 0, maxCompressedBlockSizeAlloc)
+			b.dataStorage = make([]byte, 0, maxCompressedBlockSize)
 		}
 	}
 	if cap(b.dst) <= maxSize {
@@ -494,24 +481,16 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 		b.dst = append(b.dst, hist.decoders.literals...)
 		return nil
 	}
-	before := len(hist.decoders.out)
-	err = hist.decoders.decodeSync(hist.b[hist.ignoreBuffer:])
+	err = hist.decoders.decodeSync(hist)
 	if err != nil {
 		return err
 	}
-	if hist.decoders.maxSyncLen > 0 {
-		hist.decoders.maxSyncLen += uint64(before)
-		hist.decoders.maxSyncLen -= uint64(len(hist.decoders.out))
-	}
 	b.dst = hist.decoders.out
 	hist.recentOffsets = hist.decoders.prevOffset
 	return nil
 }
 
 func (b *blockDec) prepareSequences(in []byte, hist *history) (err error) {
-	if debugDecoder {
-		printf("prepareSequences: %d byte(s) input\n", len(in))
-	}
 	// Decode Sequences
 	// https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md#sequences-section
 	if len(in) < 1 {
@@ -520,6 +499,8 @@ func (b *blockDec) prepareSequences(in []byte, hist *history) (err error) {
 	var nSeqs int
 	seqHeader := in[0]
 	switch {
+	case seqHeader == 0:
+		in = in[1:]
 	case seqHeader < 128:
 		nSeqs = int(seqHeader)
 		in = in[1:]
@@ -536,13 +517,6 @@ func (b *blockDec) prepareSequences(in []byte, hist *history) (err error) {
 		nSeqs = 0x7f00 + int(in[1]) + (int(in[2]) << 8)
 		in = in[3:]
 	}
-	if nSeqs == 0 && len(in) != 0 {
-		// When no sequences, there should not be any more data...
-		if debugDecoder {
-			printf("prepareSequences: 0 sequences, but %d byte(s) left on stream\n", len(in))
-		}
-		return ErrUnexpectedBlockSize
-	}
 
 	var seqs = &hist.decoders
 	seqs.nSeqs = nSeqs
@@ -645,22 +619,6 @@ func (b *blockDec) prepareSequences(in []byte, hist *history) (err error) {
 		println("initializing sequences:", err)
 		return err
 	}
-	// Extract blocks...
-	if false && hist.dict == nil {
-		fatalErr := func(err error) {
-			if err != nil {
-				panic(err)
-			}
-		}
-		fn := fmt.Sprintf("n-%d-lits-%d-prev-%d-%d-%d-win-%d.blk", hist.decoders.nSeqs, len(hist.decoders.literals), hist.recentOffsets[0], hist.recentOffsets[1], hist.recentOffsets[2], hist.windowSize)
-		var buf bytes.Buffer
-		fatalErr(binary.Write(&buf, binary.LittleEndian, hist.decoders.litLengths.fse))
-		fatalErr(binary.Write(&buf, binary.LittleEndian, hist.decoders.matchLengths.fse))
-		fatalErr(binary.Write(&buf, binary.LittleEndian, hist.decoders.offsets.fse))
-		buf.Write(in)
-		ioutil.WriteFile(filepath.Join("testdata", "seqs", fn), buf.Bytes(), os.ModePerm)
-	}
-
 	return nil
 }
 
@@ -677,9 +635,7 @@ func (b *blockDec) decodeSequences(hist *history) error {
 		hist.decoders.seqSize = len(hist.decoders.literals)
 		return nil
 	}
-	hist.decoders.windowSize = hist.windowSize
 	hist.decoders.prevOffset = hist.recentOffsets
-
 	err := hist.decoders.decode(b.sequence)
 	hist.recentOffsets = hist.decoders.prevOffset
 	return err
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/decoder.go b/backend/vendor/github.com/klauspost/compress/zstd/decoder.go
index c65ea979..a93dfaf1 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/decoder.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/decoder.go
@@ -347,20 +347,18 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
 			}
 			frame.history.setDict(&dict)
 		}
-		if frame.WindowSize > d.o.maxWindowSize {
-			return dst, ErrWindowSizeExceeded
+
+		if frame.FrameContentSize > d.o.maxDecodedSize-uint64(len(dst)) {
+			return dst, ErrDecoderSizeExceeded
 		}
-		if frame.FrameContentSize != fcsUnknown {
-			if frame.FrameContentSize > d.o.maxDecodedSize-uint64(len(dst)) {
-				return dst, ErrDecoderSizeExceeded
-			}
+		if frame.FrameContentSize > 0 && frame.FrameContentSize < 1<<30 {
+			// Never preallocate more than 1 GB up front.
 			if cap(dst)-len(dst) < int(frame.FrameContentSize) {
-				dst2 := make([]byte, len(dst), len(dst)+int(frame.FrameContentSize)+compressedBlockOverAlloc)
+				dst2 := make([]byte, len(dst), len(dst)+int(frame.FrameContentSize))
 				copy(dst2, dst)
 				dst = dst2
 			}
 		}
-
 		if cap(dst) == 0 {
 			// Allocate len(input) * 2 by default if nothing is provided
 			// and we didn't get frame content size.
@@ -516,7 +514,7 @@ func (d *Decoder) nextBlockSync() (ok bool) {
 
 		// Check frame size (before CRC)
 		d.syncStream.decodedFrame += uint64(len(d.current.b))
-		if d.syncStream.decodedFrame > d.frame.FrameContentSize {
+		if d.frame.FrameContentSize > 0 && d.syncStream.decodedFrame > d.frame.FrameContentSize {
 			if debugDecoder {
 				printf("DecodedFrame (%d) > FrameContentSize (%d)\n", d.syncStream.decodedFrame, d.frame.FrameContentSize)
 			}
@@ -525,7 +523,7 @@ func (d *Decoder) nextBlockSync() (ok bool) {
 		}
 
 		// Check FCS
-		if d.current.d.Last && d.frame.FrameContentSize != fcsUnknown && d.syncStream.decodedFrame != d.frame.FrameContentSize {
+		if d.current.d.Last && d.frame.FrameContentSize > 0 && d.syncStream.decodedFrame != d.frame.FrameContentSize {
 			if debugDecoder {
 				printf("DecodedFrame (%d) != FrameContentSize (%d)\n", d.syncStream.decodedFrame, d.frame.FrameContentSize)
 			}
@@ -702,7 +700,6 @@ func (d *Decoder) startStreamDecoder(ctx context.Context, r io.Reader, output ch
 				}
 				hist.decoders = block.async.newHist.decoders
 				hist.recentOffsets = block.async.newHist.recentOffsets
-				hist.windowSize = block.async.newHist.windowSize
 				if block.async.newHist.dict != nil {
 					hist.setDict(block.async.newHist.dict)
 				}
@@ -814,11 +811,11 @@ func (d *Decoder) startStreamDecoder(ctx context.Context, r io.Reader, output ch
 			}
 			if !hasErr {
 				decodedFrame += uint64(len(do.b))
-				if decodedFrame > fcs {
+				if fcs > 0 && decodedFrame > fcs {
 					println("fcs exceeded", block.Last, fcs, decodedFrame)
 					do.err = ErrFrameSizeExceeded
 					hasErr = true
-				} else if block.Last && fcs != fcsUnknown && decodedFrame != fcs {
+				} else if block.Last && fcs > 0 && decodedFrame != fcs {
 					do.err = ErrFrameSizeMismatch
 					hasErr = true
 				} else {
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/decoder_options.go b/backend/vendor/github.com/klauspost/compress/zstd/decoder_options.go
index fc52ebc4..fd05c9bb 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/decoder_options.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/decoder_options.go
@@ -31,7 +31,7 @@ func (o *decoderOptions) setDefault() {
 	if o.concurrent > 4 {
 		o.concurrent = 4
 	}
-	o.maxDecodedSize = 64 << 30
+	o.maxDecodedSize = 1 << 63
 }
 
 // WithDecoderLowmem will set whether to use a lower amount of memory,
@@ -66,7 +66,7 @@ func WithDecoderConcurrency(n int) DOption {
 // WithDecoderMaxMemory allows to set a maximum decoded size for in-memory
 // non-streaming operations or maximum window size for streaming operations.
 // This can be used to control memory usage of potentially hostile content.
-// Maximum is 1 << 63 bytes. Default is 64GiB.
+// Maximum and default is 1 << 63 bytes.
 func WithDecoderMaxMemory(n uint64) DOption {
 	return func(o *decoderOptions) error {
 		if n == 0 {
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/framedec.go b/backend/vendor/github.com/klauspost/compress/zstd/framedec.go
index 509d5cec..29c3176b 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/framedec.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/framedec.go
@@ -197,7 +197,7 @@ func (d *frameDec) reset(br byteBuffer) error {
 	default:
 		fcsSize = 1 << v
 	}
-	d.FrameContentSize = fcsUnknown
+	d.FrameContentSize = 0
 	if fcsSize > 0 {
 		b, err := br.readSmall(fcsSize)
 		if err != nil {
@@ -326,19 +326,6 @@ func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) {
 	d.history.ignoreBuffer = len(dst)
 	// Store input length, so we only check new data.
 	crcStart := len(dst)
-	d.history.decoders.maxSyncLen = 0
-	if d.FrameContentSize != fcsUnknown {
-		d.history.decoders.maxSyncLen = d.FrameContentSize + uint64(len(dst))
-		if d.history.decoders.maxSyncLen > d.o.maxDecodedSize {
-			return dst, ErrDecoderSizeExceeded
-		}
-		if uint64(cap(dst)) < d.history.decoders.maxSyncLen {
-			// Alloc for output
-			dst2 := make([]byte, len(dst), d.history.decoders.maxSyncLen+compressedBlockOverAlloc)
-			copy(dst2, dst)
-			dst = dst2
-		}
-	}
 	var err error
 	for {
 		err = dec.reset(d.rawInput, d.WindowSize)
@@ -356,7 +343,12 @@ func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) {
 			err = ErrDecoderSizeExceeded
 			break
 		}
-		if uint64(len(d.history.b)-crcStart) > d.FrameContentSize {
+		if d.SingleSegment && uint64(len(d.history.b)) > d.o.maxDecodedSize {
+			println("runDecoder: single segment and", uint64(len(d.history.b)), ">", d.o.maxDecodedSize)
+			err = ErrFrameSizeExceeded
+			break
+		}
+		if d.FrameContentSize > 0 && uint64(len(d.history.b)-crcStart) > d.FrameContentSize {
 			println("runDecoder: FrameContentSize exceeded", uint64(len(d.history.b)-crcStart), ">", d.FrameContentSize)
 			err = ErrFrameSizeExceeded
 			break
@@ -364,13 +356,13 @@ func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) {
 		if dec.Last {
 			break
 		}
-		if debugDecoder {
+		if debugDecoder && d.FrameContentSize > 0 {
 			println("runDecoder: FrameContentSize", uint64(len(d.history.b)-crcStart), "<=", d.FrameContentSize)
 		}
 	}
 	dst = d.history.b
 	if err == nil {
-		if d.FrameContentSize != fcsUnknown && uint64(len(d.history.b)-crcStart) != d.FrameContentSize {
+		if d.FrameContentSize > 0 && uint64(len(d.history.b)-crcStart) != d.FrameContentSize {
 			err = ErrFrameSizeMismatch
 		} else if d.HasCheckSum {
 			var n int
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/fse_decoder.go b/backend/vendor/github.com/klauspost/compress/zstd/fse_decoder.go
index fde4e6b6..bb3d4fd6 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/fse_decoder.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/fse_decoder.go
@@ -5,10 +5,8 @@
 package zstd
 
 import (
-	"encoding/binary"
 	"errors"
 	"fmt"
-	"io"
 )
 
 const (
@@ -184,29 +182,6 @@ func (s *fseDecoder) readNCount(b *byteReader, maxSymbol uint16) error {
 	return s.buildDtable()
 }
 
-func (s *fseDecoder) mustReadFrom(r io.Reader) {
-	fatalErr := func(err error) {
-		if err != nil {
-			panic(err)
-		}
-	}
-	// 	dt             [maxTablesize]decSymbol // Decompression table.
-	//	symbolLen      uint16                  // Length of active part of the symbol table.
-	//	actualTableLog uint8                   // Selected tablelog.
-	//	maxBits        uint8                   // Maximum number of additional bits
-	//	// used for table creation to avoid allocations.
-	//	stateTable [256]uint16
-	//	norm       [maxSymbolValue + 1]int16
-	//	preDefined bool
-	fatalErr(binary.Read(r, binary.LittleEndian, &s.dt))
-	fatalErr(binary.Read(r, binary.LittleEndian, &s.symbolLen))
-	fatalErr(binary.Read(r, binary.LittleEndian, &s.actualTableLog))
-	fatalErr(binary.Read(r, binary.LittleEndian, &s.maxBits))
-	fatalErr(binary.Read(r, binary.LittleEndian, &s.stateTable))
-	fatalErr(binary.Read(r, binary.LittleEndian, &s.norm))
-	fatalErr(binary.Read(r, binary.LittleEndian, &s.preDefined))
-}
-
 // decSymbol contains information about a state entry,
 // Including the state offset base, the output symbol and
 // the number of bits to read for the low part of the destination state.
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/fuzz.go b/backend/vendor/github.com/klauspost/compress/zstd/fuzz.go
index 7f2210e0..fda8a742 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/fuzz.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/fuzz.go
@@ -1,5 +1,5 @@
-//go:build ignorecrc
-// +build ignorecrc
+//go:build gofuzz
+// +build gofuzz
 
 // Copyright 2019+ Klaus Post. All rights reserved.
 // License information can be found in the LICENSE file.
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/fuzz_none.go b/backend/vendor/github.com/klauspost/compress/zstd/fuzz_none.go
index 6811c68a..0515b201 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/fuzz_none.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/fuzz_none.go
@@ -1,5 +1,5 @@
-//go:build !ignorecrc
-// +build !ignorecrc
+//go:build !gofuzz
+// +build !gofuzz
 
 // Copyright 2019+ Klaus Post. All rights reserved.
 // License information can be found in the LICENSE file.
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/seqdec.go b/backend/vendor/github.com/klauspost/compress/zstd/seqdec.go
index e80139dd..213736ad 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/seqdec.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/seqdec.go
@@ -73,7 +73,6 @@ type sequenceDecs struct {
 	seqSize      int
 	windowSize   int
 	maxBits      uint8
-	maxSyncLen   uint64
 }
 
 // initialize all 3 decoders from the stream input.
@@ -99,13 +98,150 @@ func (s *sequenceDecs) initialize(br *bitReader, hist *history, out []byte) erro
 	return nil
 }
 
+// decode sequences from the stream with the provided history.
+func (s *sequenceDecs) decode(seqs []seqVals) error {
+	br := s.br
+
+	// Grab full sizes tables, to avoid bounds checks.
+	llTable, mlTable, ofTable := s.litLengths.fse.dt[:maxTablesize], s.matchLengths.fse.dt[:maxTablesize], s.offsets.fse.dt[:maxTablesize]
+	llState, mlState, ofState := s.litLengths.state.state, s.matchLengths.state.state, s.offsets.state.state
+	s.seqSize = 0
+	litRemain := len(s.literals)
+
+	for i := range seqs {
+		var ll, mo, ml int
+		if br.off > 4+((maxOffsetBits+16+16)>>3) {
+			// inlined function:
+			// ll, mo, ml = s.nextFast(br, llState, mlState, ofState)
+
+			// Final will not read from stream.
+			var llB, mlB, moB uint8
+			ll, llB = llState.final()
+			ml, mlB = mlState.final()
+			mo, moB = ofState.final()
+
+			// extra bits are stored in reverse order.
+			br.fillFast()
+			mo += br.getBits(moB)
+			if s.maxBits > 32 {
+				br.fillFast()
+			}
+			ml += br.getBits(mlB)
+			ll += br.getBits(llB)
+
+			if moB > 1 {
+				s.prevOffset[2] = s.prevOffset[1]
+				s.prevOffset[1] = s.prevOffset[0]
+				s.prevOffset[0] = mo
+			} else {
+				// mo = s.adjustOffset(mo, ll, moB)
+				// Inlined for rather big speedup
+				if ll == 0 {
+					// There is an exception though, when current sequence's literals_length = 0.
+					// In this case, repeated offsets are shifted by one, so an offset_value of 1 means Repeated_Offset2,
+					// an offset_value of 2 means Repeated_Offset3, and an offset_value of 3 means Repeated_Offset1 - 1_byte.
+					mo++
+				}
+
+				if mo == 0 {
+					mo = s.prevOffset[0]
+				} else {
+					var temp int
+					if mo == 3 {
+						temp = s.prevOffset[0] - 1
+					} else {
+						temp = s.prevOffset[mo]
+					}
+
+					if temp == 0 {
+						// 0 is not valid; input is corrupted; force offset to 1
+						println("WARNING: temp was 0")
+						temp = 1
+					}
+
+					if mo != 1 {
+						s.prevOffset[2] = s.prevOffset[1]
+					}
+					s.prevOffset[1] = s.prevOffset[0]
+					s.prevOffset[0] = temp
+					mo = temp
+				}
+			}
+			br.fillFast()
+		} else {
+			if br.overread() {
+				if debugDecoder {
+					printf("reading sequence %d, exceeded available data\n", i)
+				}
+				return io.ErrUnexpectedEOF
+			}
+			ll, mo, ml = s.next(br, llState, mlState, ofState)
+			br.fill()
+		}
+
+		if debugSequences {
+			println("Seq", i, "Litlen:", ll, "mo:", mo, "(abs) ml:", ml)
+		}
+		// Evaluate.
+		// We might be doing this async, so do it early.
+		if mo == 0 && ml > 0 {
+			return fmt.Errorf("zero matchoff and matchlen (%d) > 0", ml)
+		}
+		if ml > maxMatchLen {
+			return fmt.Errorf("match len (%d) bigger than max allowed length", ml)
+		}
+		s.seqSize += ll + ml
+		if s.seqSize > maxBlockSize {
+			return fmt.Errorf("output (%d) bigger than max block size", s.seqSize)
+		}
+		litRemain -= ll
+		if litRemain < 0 {
+			return fmt.Errorf("unexpected literal count, want %d bytes, but only %d is available", ll, litRemain+ll)
+		}
+		seqs[i] = seqVals{
+			ll: ll,
+			ml: ml,
+			mo: mo,
+		}
+		if i == len(seqs)-1 {
+			// This is the last sequence, so we shouldn't update state.
+			break
+		}
+
+		// Manually inlined, ~ 5-20% faster
+		// Update all 3 states at once. Approx 20% faster.
+		nBits := llState.nbBits() + mlState.nbBits() + ofState.nbBits()
+		if nBits == 0 {
+			llState = llTable[llState.newState()&maxTableMask]
+			mlState = mlTable[mlState.newState()&maxTableMask]
+			ofState = ofTable[ofState.newState()&maxTableMask]
+		} else {
+			bits := br.get32BitsFast(nBits)
+			lowBits := uint16(bits >> ((ofState.nbBits() + mlState.nbBits()) & 31))
+			llState = llTable[(llState.newState()+lowBits)&maxTableMask]
+
+			lowBits = uint16(bits >> (ofState.nbBits() & 31))
+			lowBits &= bitMask[mlState.nbBits()&15]
+			mlState = mlTable[(mlState.newState()+lowBits)&maxTableMask]
+
+			lowBits = uint16(bits) & bitMask[ofState.nbBits()&15]
+			ofState = ofTable[(ofState.newState()+lowBits)&maxTableMask]
+		}
+	}
+	s.seqSize += litRemain
+	if s.seqSize > maxBlockSize {
+		return fmt.Errorf("output (%d) bigger than max block size", s.seqSize)
+	}
+	err := br.close()
+	if err != nil {
+		printf("Closing sequences: %v, %+v\n", err, *br)
+	}
+	return err
+}
+
 // execute will execute the decoded sequence with the provided history.
 // The sequence must be evaluated before being sent.
 func (s *sequenceDecs) execute(seqs []seqVals, hist []byte) error {
-	if len(s.dict) == 0 {
-		return s.executeSimple(seqs, hist)
-	}
-
 	// Ensure we have enough output size...
 	if len(s.out)+s.seqSize > cap(s.out) {
 		addBytes := s.seqSize + len(s.out)
@@ -202,24 +338,15 @@ func (s *sequenceDecs) execute(seqs []seqVals, hist []byte) error {
 }
 
 // decode sequences from the stream with the provided history.
-func (s *sequenceDecs) decodeSync(hist []byte) error {
-	if true {
-		supported, err := s.decodeSyncSimple(hist)
-		if supported {
-			return err
-		}
-	}
+func (s *sequenceDecs) decodeSync(history *history) error {
 	br := s.br
 	seqs := s.nSeqs
 	startSize := len(s.out)
 	// Grab full sizes tables, to avoid bounds checks.
 	llTable, mlTable, ofTable := s.litLengths.fse.dt[:maxTablesize], s.matchLengths.fse.dt[:maxTablesize], s.offsets.fse.dt[:maxTablesize]
 	llState, mlState, ofState := s.litLengths.state.state, s.matchLengths.state.state, s.offsets.state.state
+	hist := history.b[history.ignoreBuffer:]
 	out := s.out
-	maxBlockSize := maxCompressedBlockSize
-	if s.windowSize < maxBlockSize {
-		maxBlockSize = s.windowSize
-	}
 
 	for i := seqs - 1; i >= 0; i-- {
 		if br.overread() {
@@ -299,7 +426,7 @@ func (s *sequenceDecs) decodeSync(hist []byte) error {
 		}
 		size := ll + ml + len(out)
 		if size-startSize > maxBlockSize {
-			return fmt.Errorf("output (%d) bigger than max block size (%d)", size-startSize, maxBlockSize)
+			return fmt.Errorf("output (%d) bigger than max block size", size)
 		}
 		if size > cap(out) {
 			// Not enough size, which can happen under high volume block streaming conditions
@@ -329,13 +456,13 @@ func (s *sequenceDecs) decodeSync(hist []byte) error {
 
 		if mo > len(out)+len(hist) || mo > s.windowSize {
 			if len(s.dict) == 0 {
-				return fmt.Errorf("match offset (%d) bigger than current history (%d)", mo, len(out)+len(hist)-startSize)
+				return fmt.Errorf("match offset (%d) bigger than current history (%d)", mo, len(out)+len(hist))
 			}
 
 			// we may be in dictionary.
 			dictO := len(s.dict) - (mo - (len(out) + len(hist)))
 			if dictO < 0 || dictO >= len(s.dict) {
-				return fmt.Errorf("match offset (%d) bigger than current history (%d)", mo, len(out)+len(hist)-startSize)
+				return fmt.Errorf("match offset (%d) bigger than current history (%d)", mo, len(out)+len(hist))
 			}
 			end := dictO + ml
 			if end > len(s.dict) {
@@ -408,11 +535,6 @@ func (s *sequenceDecs) decodeSync(hist []byte) error {
 		}
 	}
 
-	// Check if space for literals
-	if size := len(s.literals) + len(s.out) - startSize; size > maxBlockSize {
-		return fmt.Errorf("output (%d) bigger than max block size (%d)", size, maxBlockSize)
-	}
-
 	// Add final literals
 	s.out = append(out, s.literals...)
 	return br.close()
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/seqdec_amd64.go b/backend/vendor/github.com/klauspost/compress/zstd/seqdec_amd64.go
deleted file mode 100644
index 4676b09c..00000000
--- a/backend/vendor/github.com/klauspost/compress/zstd/seqdec_amd64.go
+++ /dev/null
@@ -1,350 +0,0 @@
-//go:build amd64 && !appengine && !noasm && gc
-// +build amd64,!appengine,!noasm,gc
-
-package zstd
-
-import (
-	"fmt"
-
-	"github.com/klauspost/compress/internal/cpuinfo"
-)
-
-type decodeSyncAsmContext struct {
-	llTable     []decSymbol
-	mlTable     []decSymbol
-	ofTable     []decSymbol
-	llState     uint64
-	mlState     uint64
-	ofState     uint64
-	iteration   int
-	litRemain   int
-	out         []byte
-	outPosition int
-	literals    []byte
-	litPosition int
-	history     []byte
-	windowSize  int
-	ll          int // set on error (not for all errors, please refer to _generate/gen.go)
-	ml          int // set on error (not for all errors, please refer to _generate/gen.go)
-	mo          int // set on error (not for all errors, please refer to _generate/gen.go)
-}
-
-// sequenceDecs_decodeSync_amd64 implements the main loop of sequenceDecs.decodeSync in x86 asm.
-//
-// Please refer to seqdec_generic.go for the reference implementation.
-//go:noescape
-func sequenceDecs_decodeSync_amd64(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
-
-// sequenceDecs_decodeSync_bmi2 implements the main loop of sequenceDecs.decodeSync in x86 asm with BMI2 extensions.
-//go:noescape
-func sequenceDecs_decodeSync_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
-
-// sequenceDecs_decodeSync_safe_amd64 does the same as above, but does not write more than output buffer.
-//go:noescape
-func sequenceDecs_decodeSync_safe_amd64(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
-
-// sequenceDecs_decodeSync_safe_bmi2 does the same as above, but does not write more than output buffer.
-//go:noescape
-func sequenceDecs_decodeSync_safe_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
-
-// decode sequences from the stream with the provided history but without a dictionary.
-func (s *sequenceDecs) decodeSyncSimple(hist []byte) (bool, error) {
-	if len(s.dict) > 0 {
-		return false, nil
-	}
-	if s.maxSyncLen == 0 && cap(s.out)-len(s.out) < maxCompressedBlockSize {
-		return false, nil
-	}
-	useSafe := false
-	if s.maxSyncLen == 0 && cap(s.out)-len(s.out) < maxCompressedBlockSizeAlloc {
-		useSafe = true
-	}
-	if s.maxSyncLen > 0 && cap(s.out)-len(s.out)-compressedBlockOverAlloc < int(s.maxSyncLen) {
-		useSafe = true
-	}
-	br := s.br
-
-	maxBlockSize := maxCompressedBlockSize
-	if s.windowSize < maxBlockSize {
-		maxBlockSize = s.windowSize
-	}
-
-	ctx := decodeSyncAsmContext{
-		llTable:     s.litLengths.fse.dt[:maxTablesize],
-		mlTable:     s.matchLengths.fse.dt[:maxTablesize],
-		ofTable:     s.offsets.fse.dt[:maxTablesize],
-		llState:     uint64(s.litLengths.state.state),
-		mlState:     uint64(s.matchLengths.state.state),
-		ofState:     uint64(s.offsets.state.state),
-		iteration:   s.nSeqs - 1,
-		litRemain:   len(s.literals),
-		out:         s.out,
-		outPosition: len(s.out),
-		literals:    s.literals,
-		windowSize:  s.windowSize,
-		history:     hist,
-	}
-
-	s.seqSize = 0
-	startSize := len(s.out)
-
-	var errCode int
-	if cpuinfo.HasBMI2() {
-		if useSafe {
-			errCode = sequenceDecs_decodeSync_safe_bmi2(s, br, &ctx)
-		} else {
-			errCode = sequenceDecs_decodeSync_bmi2(s, br, &ctx)
-		}
-	} else {
-		if useSafe {
-			errCode = sequenceDecs_decodeSync_safe_amd64(s, br, &ctx)
-		} else {
-			errCode = sequenceDecs_decodeSync_amd64(s, br, &ctx)
-		}
-	}
-	switch errCode {
-	case noError:
-		break
-
-	case errorMatchLenOfsMismatch:
-		return true, fmt.Errorf("zero matchoff and matchlen (%d) > 0", ctx.ml)
-
-	case errorMatchLenTooBig:
-		return true, fmt.Errorf("match len (%d) bigger than max allowed length", ctx.ml)
-
-	case errorMatchOffTooBig:
-		return true, fmt.Errorf("match offset (%d) bigger than current history (%d)",
-			ctx.mo, ctx.outPosition+len(hist)-startSize)
-
-	case errorNotEnoughLiterals:
-		return true, fmt.Errorf("unexpected literal count, want %d bytes, but only %d is available",
-			ctx.ll, ctx.litRemain+ctx.ll)
-
-	case errorNotEnoughSpace:
-		size := ctx.outPosition + ctx.ll + ctx.ml
-		if debugDecoder {
-			println("msl:", s.maxSyncLen, "cap", cap(s.out), "bef:", startSize, "sz:", size-startSize, "mbs:", maxBlockSize, "outsz:", cap(s.out)-startSize)
-		}
-		return true, fmt.Errorf("output (%d) bigger than max block size (%d)", size-startSize, maxBlockSize)
-
-	default:
-		return true, fmt.Errorf("sequenceDecs_decode returned erronous code %d", errCode)
-	}
-
-	s.seqSize += ctx.litRemain
-	if s.seqSize > maxBlockSize {
-		return true, fmt.Errorf("output (%d) bigger than max block size (%d)", s.seqSize, maxBlockSize)
-	}
-	err := br.close()
-	if err != nil {
-		printf("Closing sequences: %v, %+v\n", err, *br)
-		return true, err
-	}
-
-	s.literals = s.literals[ctx.litPosition:]
-	t := ctx.outPosition
-	s.out = s.out[:t]
-
-	// Add final literals
-	s.out = append(s.out, s.literals...)
-	if debugDecoder {
-		t += len(s.literals)
-		if t != len(s.out) {
-			panic(fmt.Errorf("length mismatch, want %d, got %d", len(s.out), t))
-		}
-	}
-
-	return true, nil
-}
-
-// --------------------------------------------------------------------------------
-
-type decodeAsmContext struct {
-	llTable   []decSymbol
-	mlTable   []decSymbol
-	ofTable   []decSymbol
-	llState   uint64
-	mlState   uint64
-	ofState   uint64
-	iteration int
-	seqs      []seqVals
-	litRemain int
-}
-
-const noError = 0
-
-// error reported when mo == 0 && ml > 0
-const errorMatchLenOfsMismatch = 1
-
-// error reported when ml > maxMatchLen
-const errorMatchLenTooBig = 2
-
-// error reported when mo > available history or mo > s.windowSize
-const errorMatchOffTooBig = 3
-
-// error reported when the sum of literal lengths exeeceds the literal buffer size
-const errorNotEnoughLiterals = 4
-
-// error reported when capacity of `out` is too small
-const errorNotEnoughSpace = 5
-
-// sequenceDecs_decode implements the main loop of sequenceDecs in x86 asm.
-//
-// Please refer to seqdec_generic.go for the reference implementation.
-//go:noescape
-func sequenceDecs_decode_amd64(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
-
-// sequenceDecs_decode implements the main loop of sequenceDecs in x86 asm.
-//
-// Please refer to seqdec_generic.go for the reference implementation.
-//go:noescape
-func sequenceDecs_decode_56_amd64(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
-
-// sequenceDecs_decode implements the main loop of sequenceDecs in x86 asm with BMI2 extensions.
-//go:noescape
-func sequenceDecs_decode_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
-
-// sequenceDecs_decode implements the main loop of sequenceDecs in x86 asm with BMI2 extensions.
-//go:noescape
-func sequenceDecs_decode_56_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
-
-// decode sequences from the stream without the provided history.
-func (s *sequenceDecs) decode(seqs []seqVals) error {
-	br := s.br
-
-	maxBlockSize := maxCompressedBlockSize
-	if s.windowSize < maxBlockSize {
-		maxBlockSize = s.windowSize
-	}
-
-	ctx := decodeAsmContext{
-		llTable:   s.litLengths.fse.dt[:maxTablesize],
-		mlTable:   s.matchLengths.fse.dt[:maxTablesize],
-		ofTable:   s.offsets.fse.dt[:maxTablesize],
-		llState:   uint64(s.litLengths.state.state),
-		mlState:   uint64(s.matchLengths.state.state),
-		ofState:   uint64(s.offsets.state.state),
-		seqs:      seqs,
-		iteration: len(seqs) - 1,
-		litRemain: len(s.literals),
-	}
-
-	s.seqSize = 0
-	lte56bits := s.maxBits+s.offsets.fse.actualTableLog+s.matchLengths.fse.actualTableLog+s.litLengths.fse.actualTableLog <= 56
-	var errCode int
-	if cpuinfo.HasBMI2() {
-		if lte56bits {
-			errCode = sequenceDecs_decode_56_bmi2(s, br, &ctx)
-		} else {
-			errCode = sequenceDecs_decode_bmi2(s, br, &ctx)
-		}
-	} else {
-		if lte56bits {
-			errCode = sequenceDecs_decode_56_amd64(s, br, &ctx)
-		} else {
-			errCode = sequenceDecs_decode_amd64(s, br, &ctx)
-		}
-	}
-	if errCode != 0 {
-		i := len(seqs) - ctx.iteration - 1
-		switch errCode {
-		case errorMatchLenOfsMismatch:
-			ml := ctx.seqs[i].ml
-			return fmt.Errorf("zero matchoff and matchlen (%d) > 0", ml)
-
-		case errorMatchLenTooBig:
-			ml := ctx.seqs[i].ml
-			return fmt.Errorf("match len (%d) bigger than max allowed length", ml)
-
-		case errorNotEnoughLiterals:
-			ll := ctx.seqs[i].ll
-			return fmt.Errorf("unexpected literal count, want %d bytes, but only %d is available", ll, ctx.litRemain+ll)
-		}
-
-		return fmt.Errorf("sequenceDecs_decode_amd64 returned erronous code %d", errCode)
-	}
-
-	if ctx.litRemain < 0 {
-		return fmt.Errorf("literal count is too big: total available %d, total requested %d",
-			len(s.literals), len(s.literals)-ctx.litRemain)
-	}
-
-	s.seqSize += ctx.litRemain
-	if s.seqSize > maxBlockSize {
-		return fmt.Errorf("output (%d) bigger than max block size (%d)", s.seqSize, maxBlockSize)
-	}
-	err := br.close()
-	if err != nil {
-		printf("Closing sequences: %v, %+v\n", err, *br)
-	}
-	return err
-}
-
-// --------------------------------------------------------------------------------
-
-type executeAsmContext struct {
-	seqs        []seqVals
-	seqIndex    int
-	out         []byte
-	history     []byte
-	literals    []byte
-	outPosition int
-	litPosition int
-	windowSize  int
-}
-
-// sequenceDecs_executeSimple_amd64 implements the main loop of sequenceDecs.executeSimple in x86 asm.
-//
-// Returns false if a match offset is too big.
-//
-// Please refer to seqdec_generic.go for the reference implementation.
-//go:noescape
-func sequenceDecs_executeSimple_amd64(ctx *executeAsmContext) bool
-
-// executeSimple handles cases when dictionary is not used.
-func (s *sequenceDecs) executeSimple(seqs []seqVals, hist []byte) error {
-	// Ensure we have enough output size...
-	if len(s.out)+s.seqSize+compressedBlockOverAlloc > cap(s.out) {
-		addBytes := s.seqSize + len(s.out) + compressedBlockOverAlloc
-		s.out = append(s.out, make([]byte, addBytes)...)
-		s.out = s.out[:len(s.out)-addBytes]
-	}
-
-	if debugDecoder {
-		printf("Execute %d seqs with literals: %d into %d bytes\n", len(seqs), len(s.literals), s.seqSize)
-	}
-
-	var t = len(s.out)
-	out := s.out[:t+s.seqSize]
-
-	ctx := executeAsmContext{
-		seqs:        seqs,
-		seqIndex:    0,
-		out:         out,
-		history:     hist,
-		outPosition: t,
-		litPosition: 0,
-		literals:    s.literals,
-		windowSize:  s.windowSize,
-	}
-
-	ok := sequenceDecs_executeSimple_amd64(&ctx)
-	if !ok {
-		return fmt.Errorf("match offset (%d) bigger than current history (%d)",
-			seqs[ctx.seqIndex].mo, ctx.outPosition+len(hist))
-	}
-	s.literals = s.literals[ctx.litPosition:]
-	t = ctx.outPosition
-
-	// Add final literals
-	copy(out[t:], s.literals)
-	if debugDecoder {
-		t += len(s.literals)
-		if t != len(out) {
-			panic(fmt.Errorf("length mismatch, want %d, got %d, ss: %d", len(out), t, s.seqSize))
-		}
-	}
-	s.out = out
-
-	return nil
-}
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/seqdec_amd64.s b/backend/vendor/github.com/klauspost/compress/zstd/seqdec_amd64.s
deleted file mode 100644
index 01cc23fa..00000000
--- a/backend/vendor/github.com/klauspost/compress/zstd/seqdec_amd64.s
+++ /dev/null
@@ -1,3519 +0,0 @@
-// Code generated by command: go run gen.go -out ../seqdec_amd64.s -pkg=zstd. DO NOT EDIT.
-
-//go:build !appengine && !noasm && gc && !noasm
-// +build !appengine,!noasm,gc,!noasm
-
-// func sequenceDecs_decode_amd64(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
-// Requires: CMOV
-TEXT ·sequenceDecs_decode_amd64(SB), $8-32
-	MOVQ    br+8(FP), AX
-	MOVQ    32(AX), DX
-	MOVBQZX 40(AX), BX
-	MOVQ    24(AX), SI
-	MOVQ    (AX), AX
-	ADDQ    SI, AX
-	MOVQ    AX, (SP)
-	MOVQ    ctx+16(FP), AX
-	MOVQ    72(AX), DI
-	MOVQ    80(AX), R8
-	MOVQ    88(AX), R9
-	MOVQ    104(AX), R10
-	MOVQ    s+0(FP), AX
-	MOVQ    144(AX), R11
-	MOVQ    152(AX), R12
-	MOVQ    160(AX), R13
-
-sequenceDecs_decode_amd64_main_loop:
-	MOVQ (SP), R14
-
-	// Fill bitreader to have enough for the offset and match length.
-	CMPQ SI, $0x08
-	JL   sequenceDecs_decode_amd64_fill_byte_by_byte
-	MOVQ BX, AX
-	SHRQ $0x03, AX
-	SUBQ AX, R14
-	MOVQ (R14), DX
-	SUBQ AX, SI
-	ANDQ $0x07, BX
-	JMP  sequenceDecs_decode_amd64_fill_end
-
-sequenceDecs_decode_amd64_fill_byte_by_byte:
-	CMPQ    SI, $0x00
-	JLE     sequenceDecs_decode_amd64_fill_end
-	CMPQ    BX, $0x07
-	JLE     sequenceDecs_decode_amd64_fill_end
-	SHLQ    $0x08, DX
-	SUBQ    $0x01, R14
-	SUBQ    $0x01, SI
-	SUBQ    $0x08, BX
-	MOVBQZX (R14), AX
-	ORQ     AX, DX
-	JMP     sequenceDecs_decode_amd64_fill_byte_by_byte
-
-sequenceDecs_decode_amd64_fill_end:
-	// Update offset
-	MOVQ    R9, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R15
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R15
-	ADDQ    R15, AX
-	MOVQ    AX, 16(R10)
-
-	// Update match length
-	MOVQ    R8, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R15
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R15
-	ADDQ    R15, AX
-	MOVQ    AX, 8(R10)
-
-	// Fill bitreader to have enough for the remaining
-	CMPQ SI, $0x08
-	JL   sequenceDecs_decode_amd64_fill_2_byte_by_byte
-	MOVQ BX, AX
-	SHRQ $0x03, AX
-	SUBQ AX, R14
-	MOVQ (R14), DX
-	SUBQ AX, SI
-	ANDQ $0x07, BX
-	JMP  sequenceDecs_decode_amd64_fill_2_end
-
-sequenceDecs_decode_amd64_fill_2_byte_by_byte:
-	CMPQ    SI, $0x00
-	JLE     sequenceDecs_decode_amd64_fill_2_end
-	CMPQ    BX, $0x07
-	JLE     sequenceDecs_decode_amd64_fill_2_end
-	SHLQ    $0x08, DX
-	SUBQ    $0x01, R14
-	SUBQ    $0x01, SI
-	SUBQ    $0x08, BX
-	MOVBQZX (R14), AX
-	ORQ     AX, DX
-	JMP     sequenceDecs_decode_amd64_fill_2_byte_by_byte
-
-sequenceDecs_decode_amd64_fill_2_end:
-	// Update literal length
-	MOVQ    DI, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R15
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R15
-	ADDQ    R15, AX
-	MOVQ    AX, (R10)
-
-	// Fill bitreader for state updates
-	MOVQ    R14, (SP)
-	MOVQ    R9, AX
-	SHRQ    $0x08, AX
-	MOVBQZX AL, AX
-	MOVQ    ctx+16(FP), CX
-	CMPQ    96(CX), $0x00
-	JZ      sequenceDecs_decode_amd64_skip_update
-
-	// Update Literal Length State
-	MOVBQZX DI, R14
-	SHRQ    $0x10, DI
-	MOVWQZX DI, DI
-	CMPQ    R14, $0x00
-	JZ      sequenceDecs_decode_amd64_llState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R14, BX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVQ    R14, CX
-	NEGQ    CX
-	SHRQ    CL, R15
-	ADDQ    R15, DI
-
-sequenceDecs_decode_amd64_llState_updateState_skip_zero:
-	// Load ctx.llTable
-	MOVQ ctx+16(FP), CX
-	MOVQ (CX), CX
-	MOVQ (CX)(DI*8), DI
-
-	// Update Match Length State
-	MOVBQZX R8, R14
-	SHRQ    $0x10, R8
-	MOVWQZX R8, R8
-	CMPQ    R14, $0x00
-	JZ      sequenceDecs_decode_amd64_mlState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R14, BX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVQ    R14, CX
-	NEGQ    CX
-	SHRQ    CL, R15
-	ADDQ    R15, R8
-
-sequenceDecs_decode_amd64_mlState_updateState_skip_zero:
-	// Load ctx.mlTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 24(CX), CX
-	MOVQ (CX)(R8*8), R8
-
-	// Update Offset State
-	MOVBQZX R9, R14
-	SHRQ    $0x10, R9
-	MOVWQZX R9, R9
-	CMPQ    R14, $0x00
-	JZ      sequenceDecs_decode_amd64_ofState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R14, BX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVQ    R14, CX
-	NEGQ    CX
-	SHRQ    CL, R15
-	ADDQ    R15, R9
-
-sequenceDecs_decode_amd64_ofState_updateState_skip_zero:
-	// Load ctx.ofTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 48(CX), CX
-	MOVQ (CX)(R9*8), R9
-
-sequenceDecs_decode_amd64_skip_update:
-	// Adjust offset
-	MOVQ 16(R10), CX
-	CMPQ AX, $0x01
-	JBE  sequenceDecs_decode_amd64_adjust_offsetB_1_or_0
-	MOVQ R12, R13
-	MOVQ R11, R12
-	MOVQ CX, R11
-	JMP  sequenceDecs_decode_amd64_adjust_end
-
-sequenceDecs_decode_amd64_adjust_offsetB_1_or_0:
-	CMPQ (R10), $0x00000000
-	JNE  sequenceDecs_decode_amd64_adjust_offset_maybezero
-	INCQ CX
-	JMP  sequenceDecs_decode_amd64_adjust_offset_nonzero
-
-sequenceDecs_decode_amd64_adjust_offset_maybezero:
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decode_amd64_adjust_offset_nonzero
-	MOVQ  R11, CX
-	JMP   sequenceDecs_decode_amd64_adjust_end
-
-sequenceDecs_decode_amd64_adjust_offset_nonzero:
-	CMPQ CX, $0x01
-	JB   sequenceDecs_decode_amd64_adjust_zero
-	JEQ  sequenceDecs_decode_amd64_adjust_one
-	CMPQ CX, $0x02
-	JA   sequenceDecs_decode_amd64_adjust_three
-	JMP  sequenceDecs_decode_amd64_adjust_two
-
-sequenceDecs_decode_amd64_adjust_zero:
-	MOVQ R11, AX
-	JMP  sequenceDecs_decode_amd64_adjust_test_temp_valid
-
-sequenceDecs_decode_amd64_adjust_one:
-	MOVQ R12, AX
-	JMP  sequenceDecs_decode_amd64_adjust_test_temp_valid
-
-sequenceDecs_decode_amd64_adjust_two:
-	MOVQ R13, AX
-	JMP  sequenceDecs_decode_amd64_adjust_test_temp_valid
-
-sequenceDecs_decode_amd64_adjust_three:
-	LEAQ -1(R11), AX
-
-sequenceDecs_decode_amd64_adjust_test_temp_valid:
-	TESTQ AX, AX
-	JNZ   sequenceDecs_decode_amd64_adjust_temp_valid
-	MOVQ  $0x00000001, AX
-
-sequenceDecs_decode_amd64_adjust_temp_valid:
-	CMPQ    CX, $0x01
-	CMOVQNE R12, R13
-	MOVQ    R11, R12
-	MOVQ    AX, R11
-	MOVQ    AX, CX
-
-sequenceDecs_decode_amd64_adjust_end:
-	MOVQ CX, 16(R10)
-
-	// Check values
-	MOVQ  8(R10), AX
-	MOVQ  (R10), R14
-	LEAQ  (AX)(R14*1), R15
-	MOVQ  s+0(FP), BP
-	ADDQ  R15, 256(BP)
-	MOVQ  ctx+16(FP), R15
-	SUBQ  R14, 128(R15)
-	JS    error_not_enough_literals
-	CMPQ  AX, $0x00020002
-	JA    sequenceDecs_decode_amd64_error_match_len_too_big
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decode_amd64_match_len_ofs_ok
-	TESTQ AX, AX
-	JNZ   sequenceDecs_decode_amd64_error_match_len_ofs_mismatch
-
-sequenceDecs_decode_amd64_match_len_ofs_ok:
-	ADDQ $0x18, R10
-	MOVQ ctx+16(FP), AX
-	DECQ 96(AX)
-	JNS  sequenceDecs_decode_amd64_main_loop
-	MOVQ s+0(FP), AX
-	MOVQ R11, 144(AX)
-	MOVQ R12, 152(AX)
-	MOVQ R13, 160(AX)
-	MOVQ br+8(FP), AX
-	MOVQ DX, 32(AX)
-	MOVB BL, 40(AX)
-	MOVQ SI, 24(AX)
-
-	// Return success
-	MOVQ $0x00000000, ret+24(FP)
-	RET
-
-	// Return with match length error
-sequenceDecs_decode_amd64_error_match_len_ofs_mismatch:
-	MOVQ $0x00000001, ret+24(FP)
-	RET
-
-	// Return with match too long error
-sequenceDecs_decode_amd64_error_match_len_too_big:
-	MOVQ $0x00000002, ret+24(FP)
-	RET
-
-	// Return with match offset too long error
-	MOVQ $0x00000003, ret+24(FP)
-	RET
-
-	// Return with not enough literals error
-error_not_enough_literals:
-	MOVQ $0x00000004, ret+24(FP)
-	RET
-
-	// Return with not enough output space error
-	MOVQ $0x00000005, ret+24(FP)
-	RET
-
-// func sequenceDecs_decode_56_amd64(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
-// Requires: CMOV
-TEXT ·sequenceDecs_decode_56_amd64(SB), $8-32
-	MOVQ    br+8(FP), AX
-	MOVQ    32(AX), DX
-	MOVBQZX 40(AX), BX
-	MOVQ    24(AX), SI
-	MOVQ    (AX), AX
-	ADDQ    SI, AX
-	MOVQ    AX, (SP)
-	MOVQ    ctx+16(FP), AX
-	MOVQ    72(AX), DI
-	MOVQ    80(AX), R8
-	MOVQ    88(AX), R9
-	MOVQ    104(AX), R10
-	MOVQ    s+0(FP), AX
-	MOVQ    144(AX), R11
-	MOVQ    152(AX), R12
-	MOVQ    160(AX), R13
-
-sequenceDecs_decode_56_amd64_main_loop:
-	MOVQ (SP), R14
-
-	// Fill bitreader to have enough for the offset and match length.
-	CMPQ SI, $0x08
-	JL   sequenceDecs_decode_56_amd64_fill_byte_by_byte
-	MOVQ BX, AX
-	SHRQ $0x03, AX
-	SUBQ AX, R14
-	MOVQ (R14), DX
-	SUBQ AX, SI
-	ANDQ $0x07, BX
-	JMP  sequenceDecs_decode_56_amd64_fill_end
-
-sequenceDecs_decode_56_amd64_fill_byte_by_byte:
-	CMPQ    SI, $0x00
-	JLE     sequenceDecs_decode_56_amd64_fill_end
-	CMPQ    BX, $0x07
-	JLE     sequenceDecs_decode_56_amd64_fill_end
-	SHLQ    $0x08, DX
-	SUBQ    $0x01, R14
-	SUBQ    $0x01, SI
-	SUBQ    $0x08, BX
-	MOVBQZX (R14), AX
-	ORQ     AX, DX
-	JMP     sequenceDecs_decode_56_amd64_fill_byte_by_byte
-
-sequenceDecs_decode_56_amd64_fill_end:
-	// Update offset
-	MOVQ    R9, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R15
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R15
-	ADDQ    R15, AX
-	MOVQ    AX, 16(R10)
-
-	// Update match length
-	MOVQ    R8, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R15
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R15
-	ADDQ    R15, AX
-	MOVQ    AX, 8(R10)
-
-	// Update literal length
-	MOVQ    DI, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R15
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R15
-	ADDQ    R15, AX
-	MOVQ    AX, (R10)
-
-	// Fill bitreader for state updates
-	MOVQ    R14, (SP)
-	MOVQ    R9, AX
-	SHRQ    $0x08, AX
-	MOVBQZX AL, AX
-	MOVQ    ctx+16(FP), CX
-	CMPQ    96(CX), $0x00
-	JZ      sequenceDecs_decode_56_amd64_skip_update
-
-	// Update Literal Length State
-	MOVBQZX DI, R14
-	SHRQ    $0x10, DI
-	MOVWQZX DI, DI
-	CMPQ    R14, $0x00
-	JZ      sequenceDecs_decode_56_amd64_llState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R14, BX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVQ    R14, CX
-	NEGQ    CX
-	SHRQ    CL, R15
-	ADDQ    R15, DI
-
-sequenceDecs_decode_56_amd64_llState_updateState_skip_zero:
-	// Load ctx.llTable
-	MOVQ ctx+16(FP), CX
-	MOVQ (CX), CX
-	MOVQ (CX)(DI*8), DI
-
-	// Update Match Length State
-	MOVBQZX R8, R14
-	SHRQ    $0x10, R8
-	MOVWQZX R8, R8
-	CMPQ    R14, $0x00
-	JZ      sequenceDecs_decode_56_amd64_mlState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R14, BX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVQ    R14, CX
-	NEGQ    CX
-	SHRQ    CL, R15
-	ADDQ    R15, R8
-
-sequenceDecs_decode_56_amd64_mlState_updateState_skip_zero:
-	// Load ctx.mlTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 24(CX), CX
-	MOVQ (CX)(R8*8), R8
-
-	// Update Offset State
-	MOVBQZX R9, R14
-	SHRQ    $0x10, R9
-	MOVWQZX R9, R9
-	CMPQ    R14, $0x00
-	JZ      sequenceDecs_decode_56_amd64_ofState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R14, BX
-	MOVQ    DX, R15
-	SHLQ    CL, R15
-	MOVQ    R14, CX
-	NEGQ    CX
-	SHRQ    CL, R15
-	ADDQ    R15, R9
-
-sequenceDecs_decode_56_amd64_ofState_updateState_skip_zero:
-	// Load ctx.ofTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 48(CX), CX
-	MOVQ (CX)(R9*8), R9
-
-sequenceDecs_decode_56_amd64_skip_update:
-	// Adjust offset
-	MOVQ 16(R10), CX
-	CMPQ AX, $0x01
-	JBE  sequenceDecs_decode_56_amd64_adjust_offsetB_1_or_0
-	MOVQ R12, R13
-	MOVQ R11, R12
-	MOVQ CX, R11
-	JMP  sequenceDecs_decode_56_amd64_adjust_end
-
-sequenceDecs_decode_56_amd64_adjust_offsetB_1_or_0:
-	CMPQ (R10), $0x00000000
-	JNE  sequenceDecs_decode_56_amd64_adjust_offset_maybezero
-	INCQ CX
-	JMP  sequenceDecs_decode_56_amd64_adjust_offset_nonzero
-
-sequenceDecs_decode_56_amd64_adjust_offset_maybezero:
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decode_56_amd64_adjust_offset_nonzero
-	MOVQ  R11, CX
-	JMP   sequenceDecs_decode_56_amd64_adjust_end
-
-sequenceDecs_decode_56_amd64_adjust_offset_nonzero:
-	CMPQ CX, $0x01
-	JB   sequenceDecs_decode_56_amd64_adjust_zero
-	JEQ  sequenceDecs_decode_56_amd64_adjust_one
-	CMPQ CX, $0x02
-	JA   sequenceDecs_decode_56_amd64_adjust_three
-	JMP  sequenceDecs_decode_56_amd64_adjust_two
-
-sequenceDecs_decode_56_amd64_adjust_zero:
-	MOVQ R11, AX
-	JMP  sequenceDecs_decode_56_amd64_adjust_test_temp_valid
-
-sequenceDecs_decode_56_amd64_adjust_one:
-	MOVQ R12, AX
-	JMP  sequenceDecs_decode_56_amd64_adjust_test_temp_valid
-
-sequenceDecs_decode_56_amd64_adjust_two:
-	MOVQ R13, AX
-	JMP  sequenceDecs_decode_56_amd64_adjust_test_temp_valid
-
-sequenceDecs_decode_56_amd64_adjust_three:
-	LEAQ -1(R11), AX
-
-sequenceDecs_decode_56_amd64_adjust_test_temp_valid:
-	TESTQ AX, AX
-	JNZ   sequenceDecs_decode_56_amd64_adjust_temp_valid
-	MOVQ  $0x00000001, AX
-
-sequenceDecs_decode_56_amd64_adjust_temp_valid:
-	CMPQ    CX, $0x01
-	CMOVQNE R12, R13
-	MOVQ    R11, R12
-	MOVQ    AX, R11
-	MOVQ    AX, CX
-
-sequenceDecs_decode_56_amd64_adjust_end:
-	MOVQ CX, 16(R10)
-
-	// Check values
-	MOVQ  8(R10), AX
-	MOVQ  (R10), R14
-	LEAQ  (AX)(R14*1), R15
-	MOVQ  s+0(FP), BP
-	ADDQ  R15, 256(BP)
-	MOVQ  ctx+16(FP), R15
-	SUBQ  R14, 128(R15)
-	JS    error_not_enough_literals
-	CMPQ  AX, $0x00020002
-	JA    sequenceDecs_decode_56_amd64_error_match_len_too_big
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decode_56_amd64_match_len_ofs_ok
-	TESTQ AX, AX
-	JNZ   sequenceDecs_decode_56_amd64_error_match_len_ofs_mismatch
-
-sequenceDecs_decode_56_amd64_match_len_ofs_ok:
-	ADDQ $0x18, R10
-	MOVQ ctx+16(FP), AX
-	DECQ 96(AX)
-	JNS  sequenceDecs_decode_56_amd64_main_loop
-	MOVQ s+0(FP), AX
-	MOVQ R11, 144(AX)
-	MOVQ R12, 152(AX)
-	MOVQ R13, 160(AX)
-	MOVQ br+8(FP), AX
-	MOVQ DX, 32(AX)
-	MOVB BL, 40(AX)
-	MOVQ SI, 24(AX)
-
-	// Return success
-	MOVQ $0x00000000, ret+24(FP)
-	RET
-
-	// Return with match length error
-sequenceDecs_decode_56_amd64_error_match_len_ofs_mismatch:
-	MOVQ $0x00000001, ret+24(FP)
-	RET
-
-	// Return with match too long error
-sequenceDecs_decode_56_amd64_error_match_len_too_big:
-	MOVQ $0x00000002, ret+24(FP)
-	RET
-
-	// Return with match offset too long error
-	MOVQ $0x00000003, ret+24(FP)
-	RET
-
-	// Return with not enough literals error
-error_not_enough_literals:
-	MOVQ $0x00000004, ret+24(FP)
-	RET
-
-	// Return with not enough output space error
-	MOVQ $0x00000005, ret+24(FP)
-	RET
-
-// func sequenceDecs_decode_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
-// Requires: BMI, BMI2, CMOV
-TEXT ·sequenceDecs_decode_bmi2(SB), $8-32
-	MOVQ    br+8(FP), CX
-	MOVQ    32(CX), AX
-	MOVBQZX 40(CX), DX
-	MOVQ    24(CX), BX
-	MOVQ    (CX), CX
-	ADDQ    BX, CX
-	MOVQ    CX, (SP)
-	MOVQ    ctx+16(FP), CX
-	MOVQ    72(CX), SI
-	MOVQ    80(CX), DI
-	MOVQ    88(CX), R8
-	MOVQ    104(CX), R9
-	MOVQ    s+0(FP), CX
-	MOVQ    144(CX), R10
-	MOVQ    152(CX), R11
-	MOVQ    160(CX), R12
-
-sequenceDecs_decode_bmi2_main_loop:
-	MOVQ (SP), R13
-
-	// Fill bitreader to have enough for the offset and match length.
-	CMPQ BX, $0x08
-	JL   sequenceDecs_decode_bmi2_fill_byte_by_byte
-	MOVQ DX, CX
-	SHRQ $0x03, CX
-	SUBQ CX, R13
-	MOVQ (R13), AX
-	SUBQ CX, BX
-	ANDQ $0x07, DX
-	JMP  sequenceDecs_decode_bmi2_fill_end
-
-sequenceDecs_decode_bmi2_fill_byte_by_byte:
-	CMPQ    BX, $0x00
-	JLE     sequenceDecs_decode_bmi2_fill_end
-	CMPQ    DX, $0x07
-	JLE     sequenceDecs_decode_bmi2_fill_end
-	SHLQ    $0x08, AX
-	SUBQ    $0x01, R13
-	SUBQ    $0x01, BX
-	SUBQ    $0x08, DX
-	MOVBQZX (R13), CX
-	ORQ     CX, AX
-	JMP     sequenceDecs_decode_bmi2_fill_byte_by_byte
-
-sequenceDecs_decode_bmi2_fill_end:
-	// Update offset
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, R8, R14
-	MOVQ   AX, R15
-	LEAQ   (DX)(R14*1), CX
-	ROLQ   CL, R15
-	BZHIQ  R14, R15, R15
-	MOVQ   CX, DX
-	MOVQ   R8, CX
-	SHRQ   $0x20, CX
-	ADDQ   R15, CX
-	MOVQ   CX, 16(R9)
-
-	// Update match length
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, DI, R14
-	MOVQ   AX, R15
-	LEAQ   (DX)(R14*1), CX
-	ROLQ   CL, R15
-	BZHIQ  R14, R15, R15
-	MOVQ   CX, DX
-	MOVQ   DI, CX
-	SHRQ   $0x20, CX
-	ADDQ   R15, CX
-	MOVQ   CX, 8(R9)
-
-	// Fill bitreader to have enough for the remaining
-	CMPQ BX, $0x08
-	JL   sequenceDecs_decode_bmi2_fill_2_byte_by_byte
-	MOVQ DX, CX
-	SHRQ $0x03, CX
-	SUBQ CX, R13
-	MOVQ (R13), AX
-	SUBQ CX, BX
-	ANDQ $0x07, DX
-	JMP  sequenceDecs_decode_bmi2_fill_2_end
-
-sequenceDecs_decode_bmi2_fill_2_byte_by_byte:
-	CMPQ    BX, $0x00
-	JLE     sequenceDecs_decode_bmi2_fill_2_end
-	CMPQ    DX, $0x07
-	JLE     sequenceDecs_decode_bmi2_fill_2_end
-	SHLQ    $0x08, AX
-	SUBQ    $0x01, R13
-	SUBQ    $0x01, BX
-	SUBQ    $0x08, DX
-	MOVBQZX (R13), CX
-	ORQ     CX, AX
-	JMP     sequenceDecs_decode_bmi2_fill_2_byte_by_byte
-
-sequenceDecs_decode_bmi2_fill_2_end:
-	// Update literal length
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, SI, R14
-	MOVQ   AX, R15
-	LEAQ   (DX)(R14*1), CX
-	ROLQ   CL, R15
-	BZHIQ  R14, R15, R15
-	MOVQ   CX, DX
-	MOVQ   SI, CX
-	SHRQ   $0x20, CX
-	ADDQ   R15, CX
-	MOVQ   CX, (R9)
-
-	// Fill bitreader for state updates
-	MOVQ   R13, (SP)
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, R8, R13
-	MOVQ   ctx+16(FP), CX
-	CMPQ   96(CX), $0x00
-	JZ     sequenceDecs_decode_bmi2_skip_update
-
-	// Update Literal Length State
-	MOVBQZX SI, R14
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, SI, SI
-	LEAQ    (DX)(R14*1), CX
-	MOVQ    AX, R15
-	MOVQ    CX, DX
-	ROLQ    CL, R15
-	BZHIQ   R14, R15, R15
-	ADDQ    R15, SI
-
-	// Load ctx.llTable
-	MOVQ ctx+16(FP), CX
-	MOVQ (CX), CX
-	MOVQ (CX)(SI*8), SI
-
-	// Update Match Length State
-	MOVBQZX DI, R14
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, DI, DI
-	LEAQ    (DX)(R14*1), CX
-	MOVQ    AX, R15
-	MOVQ    CX, DX
-	ROLQ    CL, R15
-	BZHIQ   R14, R15, R15
-	ADDQ    R15, DI
-
-	// Load ctx.mlTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 24(CX), CX
-	MOVQ (CX)(DI*8), DI
-
-	// Update Offset State
-	MOVBQZX R8, R14
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, R8, R8
-	LEAQ    (DX)(R14*1), CX
-	MOVQ    AX, R15
-	MOVQ    CX, DX
-	ROLQ    CL, R15
-	BZHIQ   R14, R15, R15
-	ADDQ    R15, R8
-
-	// Load ctx.ofTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 48(CX), CX
-	MOVQ (CX)(R8*8), R8
-
-sequenceDecs_decode_bmi2_skip_update:
-	// Adjust offset
-	MOVQ 16(R9), CX
-	CMPQ R13, $0x01
-	JBE  sequenceDecs_decode_bmi2_adjust_offsetB_1_or_0
-	MOVQ R11, R12
-	MOVQ R10, R11
-	MOVQ CX, R10
-	JMP  sequenceDecs_decode_bmi2_adjust_end
-
-sequenceDecs_decode_bmi2_adjust_offsetB_1_or_0:
-	CMPQ (R9), $0x00000000
-	JNE  sequenceDecs_decode_bmi2_adjust_offset_maybezero
-	INCQ CX
-	JMP  sequenceDecs_decode_bmi2_adjust_offset_nonzero
-
-sequenceDecs_decode_bmi2_adjust_offset_maybezero:
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decode_bmi2_adjust_offset_nonzero
-	MOVQ  R10, CX
-	JMP   sequenceDecs_decode_bmi2_adjust_end
-
-sequenceDecs_decode_bmi2_adjust_offset_nonzero:
-	CMPQ CX, $0x01
-	JB   sequenceDecs_decode_bmi2_adjust_zero
-	JEQ  sequenceDecs_decode_bmi2_adjust_one
-	CMPQ CX, $0x02
-	JA   sequenceDecs_decode_bmi2_adjust_three
-	JMP  sequenceDecs_decode_bmi2_adjust_two
-
-sequenceDecs_decode_bmi2_adjust_zero:
-	MOVQ R10, R13
-	JMP  sequenceDecs_decode_bmi2_adjust_test_temp_valid
-
-sequenceDecs_decode_bmi2_adjust_one:
-	MOVQ R11, R13
-	JMP  sequenceDecs_decode_bmi2_adjust_test_temp_valid
-
-sequenceDecs_decode_bmi2_adjust_two:
-	MOVQ R12, R13
-	JMP  sequenceDecs_decode_bmi2_adjust_test_temp_valid
-
-sequenceDecs_decode_bmi2_adjust_three:
-	LEAQ -1(R10), R13
-
-sequenceDecs_decode_bmi2_adjust_test_temp_valid:
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decode_bmi2_adjust_temp_valid
-	MOVQ  $0x00000001, R13
-
-sequenceDecs_decode_bmi2_adjust_temp_valid:
-	CMPQ    CX, $0x01
-	CMOVQNE R11, R12
-	MOVQ    R10, R11
-	MOVQ    R13, R10
-	MOVQ    R13, CX
-
-sequenceDecs_decode_bmi2_adjust_end:
-	MOVQ CX, 16(R9)
-
-	// Check values
-	MOVQ  8(R9), R13
-	MOVQ  (R9), R14
-	LEAQ  (R13)(R14*1), R15
-	MOVQ  s+0(FP), BP
-	ADDQ  R15, 256(BP)
-	MOVQ  ctx+16(FP), R15
-	SUBQ  R14, 128(R15)
-	JS    error_not_enough_literals
-	CMPQ  R13, $0x00020002
-	JA    sequenceDecs_decode_bmi2_error_match_len_too_big
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decode_bmi2_match_len_ofs_ok
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decode_bmi2_error_match_len_ofs_mismatch
-
-sequenceDecs_decode_bmi2_match_len_ofs_ok:
-	ADDQ $0x18, R9
-	MOVQ ctx+16(FP), CX
-	DECQ 96(CX)
-	JNS  sequenceDecs_decode_bmi2_main_loop
-	MOVQ s+0(FP), CX
-	MOVQ R10, 144(CX)
-	MOVQ R11, 152(CX)
-	MOVQ R12, 160(CX)
-	MOVQ br+8(FP), CX
-	MOVQ AX, 32(CX)
-	MOVB DL, 40(CX)
-	MOVQ BX, 24(CX)
-
-	// Return success
-	MOVQ $0x00000000, ret+24(FP)
-	RET
-
-	// Return with match length error
-sequenceDecs_decode_bmi2_error_match_len_ofs_mismatch:
-	MOVQ $0x00000001, ret+24(FP)
-	RET
-
-	// Return with match too long error
-sequenceDecs_decode_bmi2_error_match_len_too_big:
-	MOVQ $0x00000002, ret+24(FP)
-	RET
-
-	// Return with match offset too long error
-	MOVQ $0x00000003, ret+24(FP)
-	RET
-
-	// Return with not enough literals error
-error_not_enough_literals:
-	MOVQ $0x00000004, ret+24(FP)
-	RET
-
-	// Return with not enough output space error
-	MOVQ $0x00000005, ret+24(FP)
-	RET
-
-// func sequenceDecs_decode_56_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
-// Requires: BMI, BMI2, CMOV
-TEXT ·sequenceDecs_decode_56_bmi2(SB), $8-32
-	MOVQ    br+8(FP), CX
-	MOVQ    32(CX), AX
-	MOVBQZX 40(CX), DX
-	MOVQ    24(CX), BX
-	MOVQ    (CX), CX
-	ADDQ    BX, CX
-	MOVQ    CX, (SP)
-	MOVQ    ctx+16(FP), CX
-	MOVQ    72(CX), SI
-	MOVQ    80(CX), DI
-	MOVQ    88(CX), R8
-	MOVQ    104(CX), R9
-	MOVQ    s+0(FP), CX
-	MOVQ    144(CX), R10
-	MOVQ    152(CX), R11
-	MOVQ    160(CX), R12
-
-sequenceDecs_decode_56_bmi2_main_loop:
-	MOVQ (SP), R13
-
-	// Fill bitreader to have enough for the offset and match length.
-	CMPQ BX, $0x08
-	JL   sequenceDecs_decode_56_bmi2_fill_byte_by_byte
-	MOVQ DX, CX
-	SHRQ $0x03, CX
-	SUBQ CX, R13
-	MOVQ (R13), AX
-	SUBQ CX, BX
-	ANDQ $0x07, DX
-	JMP  sequenceDecs_decode_56_bmi2_fill_end
-
-sequenceDecs_decode_56_bmi2_fill_byte_by_byte:
-	CMPQ    BX, $0x00
-	JLE     sequenceDecs_decode_56_bmi2_fill_end
-	CMPQ    DX, $0x07
-	JLE     sequenceDecs_decode_56_bmi2_fill_end
-	SHLQ    $0x08, AX
-	SUBQ    $0x01, R13
-	SUBQ    $0x01, BX
-	SUBQ    $0x08, DX
-	MOVBQZX (R13), CX
-	ORQ     CX, AX
-	JMP     sequenceDecs_decode_56_bmi2_fill_byte_by_byte
-
-sequenceDecs_decode_56_bmi2_fill_end:
-	// Update offset
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, R8, R14
-	MOVQ   AX, R15
-	LEAQ   (DX)(R14*1), CX
-	ROLQ   CL, R15
-	BZHIQ  R14, R15, R15
-	MOVQ   CX, DX
-	MOVQ   R8, CX
-	SHRQ   $0x20, CX
-	ADDQ   R15, CX
-	MOVQ   CX, 16(R9)
-
-	// Update match length
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, DI, R14
-	MOVQ   AX, R15
-	LEAQ   (DX)(R14*1), CX
-	ROLQ   CL, R15
-	BZHIQ  R14, R15, R15
-	MOVQ   CX, DX
-	MOVQ   DI, CX
-	SHRQ   $0x20, CX
-	ADDQ   R15, CX
-	MOVQ   CX, 8(R9)
-
-	// Update literal length
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, SI, R14
-	MOVQ   AX, R15
-	LEAQ   (DX)(R14*1), CX
-	ROLQ   CL, R15
-	BZHIQ  R14, R15, R15
-	MOVQ   CX, DX
-	MOVQ   SI, CX
-	SHRQ   $0x20, CX
-	ADDQ   R15, CX
-	MOVQ   CX, (R9)
-
-	// Fill bitreader for state updates
-	MOVQ   R13, (SP)
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, R8, R13
-	MOVQ   ctx+16(FP), CX
-	CMPQ   96(CX), $0x00
-	JZ     sequenceDecs_decode_56_bmi2_skip_update
-
-	// Update Literal Length State
-	MOVBQZX SI, R14
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, SI, SI
-	LEAQ    (DX)(R14*1), CX
-	MOVQ    AX, R15
-	MOVQ    CX, DX
-	ROLQ    CL, R15
-	BZHIQ   R14, R15, R15
-	ADDQ    R15, SI
-
-	// Load ctx.llTable
-	MOVQ ctx+16(FP), CX
-	MOVQ (CX), CX
-	MOVQ (CX)(SI*8), SI
-
-	// Update Match Length State
-	MOVBQZX DI, R14
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, DI, DI
-	LEAQ    (DX)(R14*1), CX
-	MOVQ    AX, R15
-	MOVQ    CX, DX
-	ROLQ    CL, R15
-	BZHIQ   R14, R15, R15
-	ADDQ    R15, DI
-
-	// Load ctx.mlTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 24(CX), CX
-	MOVQ (CX)(DI*8), DI
-
-	// Update Offset State
-	MOVBQZX R8, R14
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, R8, R8
-	LEAQ    (DX)(R14*1), CX
-	MOVQ    AX, R15
-	MOVQ    CX, DX
-	ROLQ    CL, R15
-	BZHIQ   R14, R15, R15
-	ADDQ    R15, R8
-
-	// Load ctx.ofTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 48(CX), CX
-	MOVQ (CX)(R8*8), R8
-
-sequenceDecs_decode_56_bmi2_skip_update:
-	// Adjust offset
-	MOVQ 16(R9), CX
-	CMPQ R13, $0x01
-	JBE  sequenceDecs_decode_56_bmi2_adjust_offsetB_1_or_0
-	MOVQ R11, R12
-	MOVQ R10, R11
-	MOVQ CX, R10
-	JMP  sequenceDecs_decode_56_bmi2_adjust_end
-
-sequenceDecs_decode_56_bmi2_adjust_offsetB_1_or_0:
-	CMPQ (R9), $0x00000000
-	JNE  sequenceDecs_decode_56_bmi2_adjust_offset_maybezero
-	INCQ CX
-	JMP  sequenceDecs_decode_56_bmi2_adjust_offset_nonzero
-
-sequenceDecs_decode_56_bmi2_adjust_offset_maybezero:
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decode_56_bmi2_adjust_offset_nonzero
-	MOVQ  R10, CX
-	JMP   sequenceDecs_decode_56_bmi2_adjust_end
-
-sequenceDecs_decode_56_bmi2_adjust_offset_nonzero:
-	CMPQ CX, $0x01
-	JB   sequenceDecs_decode_56_bmi2_adjust_zero
-	JEQ  sequenceDecs_decode_56_bmi2_adjust_one
-	CMPQ CX, $0x02
-	JA   sequenceDecs_decode_56_bmi2_adjust_three
-	JMP  sequenceDecs_decode_56_bmi2_adjust_two
-
-sequenceDecs_decode_56_bmi2_adjust_zero:
-	MOVQ R10, R13
-	JMP  sequenceDecs_decode_56_bmi2_adjust_test_temp_valid
-
-sequenceDecs_decode_56_bmi2_adjust_one:
-	MOVQ R11, R13
-	JMP  sequenceDecs_decode_56_bmi2_adjust_test_temp_valid
-
-sequenceDecs_decode_56_bmi2_adjust_two:
-	MOVQ R12, R13
-	JMP  sequenceDecs_decode_56_bmi2_adjust_test_temp_valid
-
-sequenceDecs_decode_56_bmi2_adjust_three:
-	LEAQ -1(R10), R13
-
-sequenceDecs_decode_56_bmi2_adjust_test_temp_valid:
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decode_56_bmi2_adjust_temp_valid
-	MOVQ  $0x00000001, R13
-
-sequenceDecs_decode_56_bmi2_adjust_temp_valid:
-	CMPQ    CX, $0x01
-	CMOVQNE R11, R12
-	MOVQ    R10, R11
-	MOVQ    R13, R10
-	MOVQ    R13, CX
-
-sequenceDecs_decode_56_bmi2_adjust_end:
-	MOVQ CX, 16(R9)
-
-	// Check values
-	MOVQ  8(R9), R13
-	MOVQ  (R9), R14
-	LEAQ  (R13)(R14*1), R15
-	MOVQ  s+0(FP), BP
-	ADDQ  R15, 256(BP)
-	MOVQ  ctx+16(FP), R15
-	SUBQ  R14, 128(R15)
-	JS    error_not_enough_literals
-	CMPQ  R13, $0x00020002
-	JA    sequenceDecs_decode_56_bmi2_error_match_len_too_big
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decode_56_bmi2_match_len_ofs_ok
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decode_56_bmi2_error_match_len_ofs_mismatch
-
-sequenceDecs_decode_56_bmi2_match_len_ofs_ok:
-	ADDQ $0x18, R9
-	MOVQ ctx+16(FP), CX
-	DECQ 96(CX)
-	JNS  sequenceDecs_decode_56_bmi2_main_loop
-	MOVQ s+0(FP), CX
-	MOVQ R10, 144(CX)
-	MOVQ R11, 152(CX)
-	MOVQ R12, 160(CX)
-	MOVQ br+8(FP), CX
-	MOVQ AX, 32(CX)
-	MOVB DL, 40(CX)
-	MOVQ BX, 24(CX)
-
-	// Return success
-	MOVQ $0x00000000, ret+24(FP)
-	RET
-
-	// Return with match length error
-sequenceDecs_decode_56_bmi2_error_match_len_ofs_mismatch:
-	MOVQ $0x00000001, ret+24(FP)
-	RET
-
-	// Return with match too long error
-sequenceDecs_decode_56_bmi2_error_match_len_too_big:
-	MOVQ $0x00000002, ret+24(FP)
-	RET
-
-	// Return with match offset too long error
-	MOVQ $0x00000003, ret+24(FP)
-	RET
-
-	// Return with not enough literals error
-error_not_enough_literals:
-	MOVQ $0x00000004, ret+24(FP)
-	RET
-
-	// Return with not enough output space error
-	MOVQ $0x00000005, ret+24(FP)
-	RET
-
-// func sequenceDecs_executeSimple_amd64(ctx *executeAsmContext) bool
-// Requires: SSE
-TEXT ·sequenceDecs_executeSimple_amd64(SB), $8-9
-	MOVQ  ctx+0(FP), R10
-	MOVQ  8(R10), CX
-	TESTQ CX, CX
-	JZ    empty_seqs
-	MOVQ  (R10), AX
-	MOVQ  24(R10), DX
-	MOVQ  32(R10), BX
-	MOVQ  80(R10), SI
-	MOVQ  104(R10), DI
-	MOVQ  120(R10), R8
-	MOVQ  56(R10), R9
-	MOVQ  64(R10), R10
-	ADDQ  R10, R9
-
-	// seqsBase += 24 * seqIndex
-	LEAQ (DX)(DX*2), R11
-	SHLQ $0x03, R11
-	ADDQ R11, AX
-
-	// outBase += outPosition
-	ADDQ DI, BX
-
-main_loop:
-	MOVQ (AX), R11
-	MOVQ 16(AX), R12
-	MOVQ 8(AX), R13
-
-	// Copy literals
-	TESTQ R11, R11
-	JZ    check_offset
-	XORQ  R14, R14
-	TESTQ $0x00000001, R11
-	JZ    copy_1_word
-	MOVB  (SI)(R14*1), R15
-	MOVB  R15, (BX)(R14*1)
-	ADDQ  $0x01, R14
-
-copy_1_word:
-	TESTQ $0x00000002, R11
-	JZ    copy_1_dword
-	MOVW  (SI)(R14*1), R15
-	MOVW  R15, (BX)(R14*1)
-	ADDQ  $0x02, R14
-
-copy_1_dword:
-	TESTQ $0x00000004, R11
-	JZ    copy_1_qword
-	MOVL  (SI)(R14*1), R15
-	MOVL  R15, (BX)(R14*1)
-	ADDQ  $0x04, R14
-
-copy_1_qword:
-	TESTQ $0x00000008, R11
-	JZ    copy_1_test
-	MOVQ  (SI)(R14*1), R15
-	MOVQ  R15, (BX)(R14*1)
-	ADDQ  $0x08, R14
-	JMP   copy_1_test
-
-copy_1:
-	MOVUPS (SI)(R14*1), X0
-	MOVUPS X0, (BX)(R14*1)
-	ADDQ   $0x10, R14
-
-copy_1_test:
-	CMPQ R14, R11
-	JB   copy_1
-	ADDQ R11, SI
-	ADDQ R11, BX
-	ADDQ R11, DI
-
-	// Malformed input if seq.mo > t+len(hist) || seq.mo > s.windowSize)
-check_offset:
-	LEAQ (DI)(R10*1), R11
-	CMPQ R12, R11
-	JG   error_match_off_too_big
-	CMPQ R12, R8
-	JG   error_match_off_too_big
-
-	// Copy match from history
-	MOVQ  R12, R11
-	SUBQ  DI, R11
-	JLS   copy_match
-	MOVQ  R9, R14
-	SUBQ  R11, R14
-	CMPQ  R13, R11
-	JGE   copy_all_from_history
-	XORQ  R11, R11
-	TESTQ $0x00000001, R13
-	JZ    copy_4_word
-	MOVB  (R14)(R11*1), R12
-	MOVB  R12, (BX)(R11*1)
-	ADDQ  $0x01, R11
-
-copy_4_word:
-	TESTQ $0x00000002, R13
-	JZ    copy_4_dword
-	MOVW  (R14)(R11*1), R12
-	MOVW  R12, (BX)(R11*1)
-	ADDQ  $0x02, R11
-
-copy_4_dword:
-	TESTQ $0x00000004, R13
-	JZ    copy_4_qword
-	MOVL  (R14)(R11*1), R12
-	MOVL  R12, (BX)(R11*1)
-	ADDQ  $0x04, R11
-
-copy_4_qword:
-	TESTQ $0x00000008, R13
-	JZ    copy_4_test
-	MOVQ  (R14)(R11*1), R12
-	MOVQ  R12, (BX)(R11*1)
-	ADDQ  $0x08, R11
-	JMP   copy_4_test
-
-copy_4:
-	MOVUPS (R14)(R11*1), X0
-	MOVUPS X0, (BX)(R11*1)
-	ADDQ   $0x10, R11
-
-copy_4_test:
-	CMPQ R11, R13
-	JB   copy_4
-	ADDQ R13, DI
-	ADDQ R13, BX
-	ADDQ $0x18, AX
-	INCQ DX
-	CMPQ DX, CX
-	JB   main_loop
-	JMP  loop_finished
-
-copy_all_from_history:
-	XORQ  R15, R15
-	TESTQ $0x00000001, R11
-	JZ    copy_5_word
-	MOVB  (R14)(R15*1), BP
-	MOVB  BP, (BX)(R15*1)
-	ADDQ  $0x01, R15
-
-copy_5_word:
-	TESTQ $0x00000002, R11
-	JZ    copy_5_dword
-	MOVW  (R14)(R15*1), BP
-	MOVW  BP, (BX)(R15*1)
-	ADDQ  $0x02, R15
-
-copy_5_dword:
-	TESTQ $0x00000004, R11
-	JZ    copy_5_qword
-	MOVL  (R14)(R15*1), BP
-	MOVL  BP, (BX)(R15*1)
-	ADDQ  $0x04, R15
-
-copy_5_qword:
-	TESTQ $0x00000008, R11
-	JZ    copy_5_test
-	MOVQ  (R14)(R15*1), BP
-	MOVQ  BP, (BX)(R15*1)
-	ADDQ  $0x08, R15
-	JMP   copy_5_test
-
-copy_5:
-	MOVUPS (R14)(R15*1), X0
-	MOVUPS X0, (BX)(R15*1)
-	ADDQ   $0x10, R15
-
-copy_5_test:
-	CMPQ R15, R11
-	JB   copy_5
-	ADDQ R11, BX
-	ADDQ R11, DI
-	SUBQ R11, R13
-
-	// Copy match from the current buffer
-copy_match:
-	TESTQ R13, R13
-	JZ    handle_loop
-	MOVQ  BX, R11
-	SUBQ  R12, R11
-
-	// ml <= mo
-	CMPQ R13, R12
-	JA   copy_overlapping_match
-
-	// Copy non-overlapping match
-	XORQ R12, R12
-
-copy_2:
-	MOVUPS (R11)(R12*1), X0
-	MOVUPS X0, (BX)(R12*1)
-	ADDQ   $0x10, R12
-	CMPQ   R12, R13
-	JB     copy_2
-	ADDQ   R13, BX
-	ADDQ   R13, DI
-	JMP    handle_loop
-
-	// Copy overlapping match
-copy_overlapping_match:
-	XORQ R12, R12
-
-copy_slow_3:
-	MOVB (R11)(R12*1), R14
-	MOVB R14, (BX)(R12*1)
-	INCQ R12
-	CMPQ R12, R13
-	JB   copy_slow_3
-	ADDQ R13, BX
-	ADDQ R13, DI
-
-handle_loop:
-	ADDQ $0x18, AX
-	INCQ DX
-	CMPQ DX, CX
-	JB   main_loop
-
-loop_finished:
-	// Return value
-	MOVB $0x01, ret+8(FP)
-
-	// Update the context
-	MOVQ ctx+0(FP), AX
-	MOVQ DX, 24(AX)
-	MOVQ DI, 104(AX)
-	MOVQ 80(AX), CX
-	SUBQ CX, SI
-	MOVQ SI, 112(AX)
-	RET
-
-error_match_off_too_big:
-	// Return value
-	MOVB $0x00, ret+8(FP)
-
-	// Update the context
-	MOVQ ctx+0(FP), AX
-	MOVQ DX, 24(AX)
-	MOVQ DI, 104(AX)
-	MOVQ 80(AX), CX
-	SUBQ CX, SI
-	MOVQ SI, 112(AX)
-	RET
-
-empty_seqs:
-	// Return value
-	MOVB $0x01, ret+8(FP)
-	RET
-
-// func sequenceDecs_decodeSync_amd64(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
-// Requires: CMOV, SSE
-TEXT ·sequenceDecs_decodeSync_amd64(SB), $64-32
-	MOVQ    br+8(FP), AX
-	MOVQ    32(AX), DX
-	MOVBQZX 40(AX), BX
-	MOVQ    24(AX), SI
-	MOVQ    (AX), AX
-	ADDQ    SI, AX
-	MOVQ    AX, (SP)
-	MOVQ    ctx+16(FP), AX
-	MOVQ    72(AX), DI
-	MOVQ    80(AX), R8
-	MOVQ    88(AX), R9
-	MOVQ    112(AX), R10
-	MOVQ    128(AX), CX
-	MOVQ    CX, 32(SP)
-	MOVQ    144(AX), R11
-	MOVQ    136(AX), R12
-	MOVQ    200(AX), CX
-	MOVQ    CX, 56(SP)
-	MOVQ    176(AX), CX
-	MOVQ    CX, 48(SP)
-	MOVQ    184(AX), AX
-	MOVQ    AX, 40(SP)
-	MOVQ    40(SP), AX
-	ADDQ    AX, 48(SP)
-
-	// Calculate poiter to s.out[cap(s.out)] (a past-end pointer)
-	ADDQ R10, 32(SP)
-
-	// outBase += outPosition
-	ADDQ R12, R10
-
-sequenceDecs_decodeSync_amd64_main_loop:
-	MOVQ (SP), R13
-
-	// Fill bitreader to have enough for the offset and match length.
-	CMPQ SI, $0x08
-	JL   sequenceDecs_decodeSync_amd64_fill_byte_by_byte
-	MOVQ BX, AX
-	SHRQ $0x03, AX
-	SUBQ AX, R13
-	MOVQ (R13), DX
-	SUBQ AX, SI
-	ANDQ $0x07, BX
-	JMP  sequenceDecs_decodeSync_amd64_fill_end
-
-sequenceDecs_decodeSync_amd64_fill_byte_by_byte:
-	CMPQ    SI, $0x00
-	JLE     sequenceDecs_decodeSync_amd64_fill_end
-	CMPQ    BX, $0x07
-	JLE     sequenceDecs_decodeSync_amd64_fill_end
-	SHLQ    $0x08, DX
-	SUBQ    $0x01, R13
-	SUBQ    $0x01, SI
-	SUBQ    $0x08, BX
-	MOVBQZX (R13), AX
-	ORQ     AX, DX
-	JMP     sequenceDecs_decodeSync_amd64_fill_byte_by_byte
-
-sequenceDecs_decodeSync_amd64_fill_end:
-	// Update offset
-	MOVQ    R9, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R14
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R14
-	ADDQ    R14, AX
-	MOVQ    AX, 8(SP)
-
-	// Update match length
-	MOVQ    R8, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R14
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R14
-	ADDQ    R14, AX
-	MOVQ    AX, 16(SP)
-
-	// Fill bitreader to have enough for the remaining
-	CMPQ SI, $0x08
-	JL   sequenceDecs_decodeSync_amd64_fill_2_byte_by_byte
-	MOVQ BX, AX
-	SHRQ $0x03, AX
-	SUBQ AX, R13
-	MOVQ (R13), DX
-	SUBQ AX, SI
-	ANDQ $0x07, BX
-	JMP  sequenceDecs_decodeSync_amd64_fill_2_end
-
-sequenceDecs_decodeSync_amd64_fill_2_byte_by_byte:
-	CMPQ    SI, $0x00
-	JLE     sequenceDecs_decodeSync_amd64_fill_2_end
-	CMPQ    BX, $0x07
-	JLE     sequenceDecs_decodeSync_amd64_fill_2_end
-	SHLQ    $0x08, DX
-	SUBQ    $0x01, R13
-	SUBQ    $0x01, SI
-	SUBQ    $0x08, BX
-	MOVBQZX (R13), AX
-	ORQ     AX, DX
-	JMP     sequenceDecs_decodeSync_amd64_fill_2_byte_by_byte
-
-sequenceDecs_decodeSync_amd64_fill_2_end:
-	// Update literal length
-	MOVQ    DI, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R14
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R14
-	ADDQ    R14, AX
-	MOVQ    AX, 24(SP)
-
-	// Fill bitreader for state updates
-	MOVQ    R13, (SP)
-	MOVQ    R9, AX
-	SHRQ    $0x08, AX
-	MOVBQZX AL, AX
-	MOVQ    ctx+16(FP), CX
-	CMPQ    96(CX), $0x00
-	JZ      sequenceDecs_decodeSync_amd64_skip_update
-
-	// Update Literal Length State
-	MOVBQZX DI, R13
-	SHRQ    $0x10, DI
-	MOVWQZX DI, DI
-	CMPQ    R13, $0x00
-	JZ      sequenceDecs_decodeSync_amd64_llState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R13, BX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVQ    R13, CX
-	NEGQ    CX
-	SHRQ    CL, R14
-	ADDQ    R14, DI
-
-sequenceDecs_decodeSync_amd64_llState_updateState_skip_zero:
-	// Load ctx.llTable
-	MOVQ ctx+16(FP), CX
-	MOVQ (CX), CX
-	MOVQ (CX)(DI*8), DI
-
-	// Update Match Length State
-	MOVBQZX R8, R13
-	SHRQ    $0x10, R8
-	MOVWQZX R8, R8
-	CMPQ    R13, $0x00
-	JZ      sequenceDecs_decodeSync_amd64_mlState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R13, BX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVQ    R13, CX
-	NEGQ    CX
-	SHRQ    CL, R14
-	ADDQ    R14, R8
-
-sequenceDecs_decodeSync_amd64_mlState_updateState_skip_zero:
-	// Load ctx.mlTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 24(CX), CX
-	MOVQ (CX)(R8*8), R8
-
-	// Update Offset State
-	MOVBQZX R9, R13
-	SHRQ    $0x10, R9
-	MOVWQZX R9, R9
-	CMPQ    R13, $0x00
-	JZ      sequenceDecs_decodeSync_amd64_ofState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R13, BX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVQ    R13, CX
-	NEGQ    CX
-	SHRQ    CL, R14
-	ADDQ    R14, R9
-
-sequenceDecs_decodeSync_amd64_ofState_updateState_skip_zero:
-	// Load ctx.ofTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 48(CX), CX
-	MOVQ (CX)(R9*8), R9
-
-sequenceDecs_decodeSync_amd64_skip_update:
-	// Adjust offset
-	MOVQ   s+0(FP), CX
-	MOVQ   8(SP), R13
-	CMPQ   AX, $0x01
-	JBE    sequenceDecs_decodeSync_amd64_adjust_offsetB_1_or_0
-	MOVUPS 144(CX), X0
-	MOVQ   R13, 144(CX)
-	MOVUPS X0, 152(CX)
-	JMP    sequenceDecs_decodeSync_amd64_adjust_end
-
-sequenceDecs_decodeSync_amd64_adjust_offsetB_1_or_0:
-	CMPQ 24(SP), $0x00000000
-	JNE  sequenceDecs_decodeSync_amd64_adjust_offset_maybezero
-	INCQ R13
-	JMP  sequenceDecs_decodeSync_amd64_adjust_offset_nonzero
-
-sequenceDecs_decodeSync_amd64_adjust_offset_maybezero:
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decodeSync_amd64_adjust_offset_nonzero
-	MOVQ  144(CX), R13
-	JMP   sequenceDecs_decodeSync_amd64_adjust_end
-
-sequenceDecs_decodeSync_amd64_adjust_offset_nonzero:
-	MOVQ    R13, AX
-	XORQ    R14, R14
-	MOVQ    $-1, R15
-	CMPQ    R13, $0x03
-	CMOVQEQ R14, AX
-	CMOVQEQ R15, R14
-	LEAQ    144(CX), R15
-	ADDQ    (R15)(AX*8), R14
-	JNZ     sequenceDecs_decodeSync_amd64_adjust_temp_valid
-	MOVQ    $0x00000001, R14
-
-sequenceDecs_decodeSync_amd64_adjust_temp_valid:
-	CMPQ R13, $0x01
-	JZ   sequenceDecs_decodeSync_amd64_adjust_skip
-	MOVQ 152(CX), AX
-	MOVQ AX, 160(CX)
-
-sequenceDecs_decodeSync_amd64_adjust_skip:
-	MOVQ 144(CX), AX
-	MOVQ AX, 152(CX)
-	MOVQ R14, 144(CX)
-	MOVQ R14, R13
-
-sequenceDecs_decodeSync_amd64_adjust_end:
-	MOVQ R13, 8(SP)
-
-	// Check values
-	MOVQ  16(SP), AX
-	MOVQ  24(SP), CX
-	LEAQ  (AX)(CX*1), R14
-	MOVQ  s+0(FP), R15
-	ADDQ  R14, 256(R15)
-	MOVQ  ctx+16(FP), R14
-	SUBQ  CX, 104(R14)
-	JS    error_not_enough_literals
-	CMPQ  AX, $0x00020002
-	JA    sequenceDecs_decodeSync_amd64_error_match_len_too_big
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decodeSync_amd64_match_len_ofs_ok
-	TESTQ AX, AX
-	JNZ   sequenceDecs_decodeSync_amd64_error_match_len_ofs_mismatch
-
-sequenceDecs_decodeSync_amd64_match_len_ofs_ok:
-	MOVQ 24(SP), AX
-	MOVQ 8(SP), CX
-	MOVQ 16(SP), R13
-
-	// Check if we have enough space in s.out
-	LEAQ (AX)(R13*1), R14
-	ADDQ R10, R14
-	CMPQ R14, 32(SP)
-	JA   error_not_enough_space
-
-	// Copy literals
-	TESTQ AX, AX
-	JZ    check_offset
-	XORQ  R14, R14
-	TESTQ $0x00000001, AX
-	JZ    copy_1_word
-	MOVB  (R11)(R14*1), R15
-	MOVB  R15, (R10)(R14*1)
-	ADDQ  $0x01, R14
-
-copy_1_word:
-	TESTQ $0x00000002, AX
-	JZ    copy_1_dword
-	MOVW  (R11)(R14*1), R15
-	MOVW  R15, (R10)(R14*1)
-	ADDQ  $0x02, R14
-
-copy_1_dword:
-	TESTQ $0x00000004, AX
-	JZ    copy_1_qword
-	MOVL  (R11)(R14*1), R15
-	MOVL  R15, (R10)(R14*1)
-	ADDQ  $0x04, R14
-
-copy_1_qword:
-	TESTQ $0x00000008, AX
-	JZ    copy_1_test
-	MOVQ  (R11)(R14*1), R15
-	MOVQ  R15, (R10)(R14*1)
-	ADDQ  $0x08, R14
-	JMP   copy_1_test
-
-copy_1:
-	MOVUPS (R11)(R14*1), X0
-	MOVUPS X0, (R10)(R14*1)
-	ADDQ   $0x10, R14
-
-copy_1_test:
-	CMPQ R14, AX
-	JB   copy_1
-	ADDQ AX, R11
-	ADDQ AX, R10
-	ADDQ AX, R12
-
-	// Malformed input if seq.mo > t+len(hist) || seq.mo > s.windowSize)
-check_offset:
-	MOVQ R12, AX
-	ADDQ 40(SP), AX
-	CMPQ CX, AX
-	JG   error_match_off_too_big
-	CMPQ CX, 56(SP)
-	JG   error_match_off_too_big
-
-	// Copy match from history
-	MOVQ  CX, AX
-	SUBQ  R12, AX
-	JLS   copy_match
-	MOVQ  48(SP), R14
-	SUBQ  AX, R14
-	CMPQ  R13, AX
-	JGE   copy_all_from_history
-	XORQ  AX, AX
-	TESTQ $0x00000001, R13
-	JZ    copy_4_word
-	MOVB  (R14)(AX*1), CL
-	MOVB  CL, (R10)(AX*1)
-	ADDQ  $0x01, AX
-
-copy_4_word:
-	TESTQ $0x00000002, R13
-	JZ    copy_4_dword
-	MOVW  (R14)(AX*1), CX
-	MOVW  CX, (R10)(AX*1)
-	ADDQ  $0x02, AX
-
-copy_4_dword:
-	TESTQ $0x00000004, R13
-	JZ    copy_4_qword
-	MOVL  (R14)(AX*1), CX
-	MOVL  CX, (R10)(AX*1)
-	ADDQ  $0x04, AX
-
-copy_4_qword:
-	TESTQ $0x00000008, R13
-	JZ    copy_4_test
-	MOVQ  (R14)(AX*1), CX
-	MOVQ  CX, (R10)(AX*1)
-	ADDQ  $0x08, AX
-	JMP   copy_4_test
-
-copy_4:
-	MOVUPS (R14)(AX*1), X0
-	MOVUPS X0, (R10)(AX*1)
-	ADDQ   $0x10, AX
-
-copy_4_test:
-	CMPQ AX, R13
-	JB   copy_4
-	ADDQ R13, R12
-	ADDQ R13, R10
-	JMP  handle_loop
-	JMP loop_finished
-
-copy_all_from_history:
-	XORQ  R15, R15
-	TESTQ $0x00000001, AX
-	JZ    copy_5_word
-	MOVB  (R14)(R15*1), BP
-	MOVB  BP, (R10)(R15*1)
-	ADDQ  $0x01, R15
-
-copy_5_word:
-	TESTQ $0x00000002, AX
-	JZ    copy_5_dword
-	MOVW  (R14)(R15*1), BP
-	MOVW  BP, (R10)(R15*1)
-	ADDQ  $0x02, R15
-
-copy_5_dword:
-	TESTQ $0x00000004, AX
-	JZ    copy_5_qword
-	MOVL  (R14)(R15*1), BP
-	MOVL  BP, (R10)(R15*1)
-	ADDQ  $0x04, R15
-
-copy_5_qword:
-	TESTQ $0x00000008, AX
-	JZ    copy_5_test
-	MOVQ  (R14)(R15*1), BP
-	MOVQ  BP, (R10)(R15*1)
-	ADDQ  $0x08, R15
-	JMP   copy_5_test
-
-copy_5:
-	MOVUPS (R14)(R15*1), X0
-	MOVUPS X0, (R10)(R15*1)
-	ADDQ   $0x10, R15
-
-copy_5_test:
-	CMPQ R15, AX
-	JB   copy_5
-	ADDQ AX, R10
-	ADDQ AX, R12
-	SUBQ AX, R13
-
-	// Copy match from the current buffer
-copy_match:
-	TESTQ R13, R13
-	JZ    handle_loop
-	MOVQ  R10, AX
-	SUBQ  CX, AX
-
-	// ml <= mo
-	CMPQ R13, CX
-	JA   copy_overlapping_match
-
-	// Copy non-overlapping match
-	XORQ CX, CX
-
-copy_2:
-	MOVUPS (AX)(CX*1), X0
-	MOVUPS X0, (R10)(CX*1)
-	ADDQ   $0x10, CX
-	CMPQ   CX, R13
-	JB     copy_2
-	ADDQ   R13, R10
-	ADDQ   R13, R12
-	JMP    handle_loop
-
-	// Copy overlapping match
-copy_overlapping_match:
-	XORQ CX, CX
-
-copy_slow_3:
-	MOVB (AX)(CX*1), R14
-	MOVB R14, (R10)(CX*1)
-	INCQ CX
-	CMPQ CX, R13
-	JB   copy_slow_3
-	ADDQ R13, R10
-	ADDQ R13, R12
-
-handle_loop:
-	MOVQ ctx+16(FP), AX
-	DECQ 96(AX)
-	JNS  sequenceDecs_decodeSync_amd64_main_loop
-
-loop_finished:
-	MOVQ br+8(FP), AX
-	MOVQ DX, 32(AX)
-	MOVB BL, 40(AX)
-	MOVQ SI, 24(AX)
-
-	// Update the context
-	MOVQ ctx+16(FP), AX
-	MOVQ R12, 136(AX)
-	MOVQ 144(AX), CX
-	SUBQ CX, R11
-	MOVQ R11, 168(AX)
-
-	// Return success
-	MOVQ $0x00000000, ret+24(FP)
-	RET
-
-	// Return with match length error
-sequenceDecs_decodeSync_amd64_error_match_len_ofs_mismatch:
-	MOVQ 16(SP), AX
-	MOVQ ctx+16(FP), CX
-	MOVQ AX, 216(CX)
-	MOVQ $0x00000001, ret+24(FP)
-	RET
-
-	// Return with match too long error
-sequenceDecs_decodeSync_amd64_error_match_len_too_big:
-	MOVQ ctx+16(FP), AX
-	MOVQ 16(SP), CX
-	MOVQ CX, 216(AX)
-	MOVQ $0x00000002, ret+24(FP)
-	RET
-
-	// Return with match offset too long error
-error_match_off_too_big:
-	MOVQ ctx+16(FP), AX
-	MOVQ 8(SP), CX
-	MOVQ CX, 224(AX)
-	MOVQ R12, 136(AX)
-	MOVQ $0x00000003, ret+24(FP)
-	RET
-
-	// Return with not enough literals error
-error_not_enough_literals:
-	MOVQ ctx+16(FP), AX
-	MOVQ 24(SP), CX
-	MOVQ CX, 208(AX)
-	MOVQ $0x00000004, ret+24(FP)
-	RET
-
-	// Return with not enough output space error
-error_not_enough_space:
-	MOVQ ctx+16(FP), AX
-	MOVQ 24(SP), CX
-	MOVQ CX, 208(AX)
-	MOVQ 16(SP), CX
-	MOVQ CX, 216(AX)
-	MOVQ R12, 136(AX)
-	MOVQ $0x00000005, ret+24(FP)
-	RET
-
-// func sequenceDecs_decodeSync_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
-// Requires: BMI, BMI2, CMOV, SSE
-TEXT ·sequenceDecs_decodeSync_bmi2(SB), $64-32
-	MOVQ    br+8(FP), CX
-	MOVQ    32(CX), AX
-	MOVBQZX 40(CX), DX
-	MOVQ    24(CX), BX
-	MOVQ    (CX), CX
-	ADDQ    BX, CX
-	MOVQ    CX, (SP)
-	MOVQ    ctx+16(FP), CX
-	MOVQ    72(CX), SI
-	MOVQ    80(CX), DI
-	MOVQ    88(CX), R8
-	MOVQ    112(CX), R9
-	MOVQ    128(CX), R10
-	MOVQ    R10, 32(SP)
-	MOVQ    144(CX), R10
-	MOVQ    136(CX), R11
-	MOVQ    200(CX), R12
-	MOVQ    R12, 56(SP)
-	MOVQ    176(CX), R12
-	MOVQ    R12, 48(SP)
-	MOVQ    184(CX), CX
-	MOVQ    CX, 40(SP)
-	MOVQ    40(SP), CX
-	ADDQ    CX, 48(SP)
-
-	// Calculate poiter to s.out[cap(s.out)] (a past-end pointer)
-	ADDQ R9, 32(SP)
-
-	// outBase += outPosition
-	ADDQ R11, R9
-
-sequenceDecs_decodeSync_bmi2_main_loop:
-	MOVQ (SP), R12
-
-	// Fill bitreader to have enough for the offset and match length.
-	CMPQ BX, $0x08
-	JL   sequenceDecs_decodeSync_bmi2_fill_byte_by_byte
-	MOVQ DX, CX
-	SHRQ $0x03, CX
-	SUBQ CX, R12
-	MOVQ (R12), AX
-	SUBQ CX, BX
-	ANDQ $0x07, DX
-	JMP  sequenceDecs_decodeSync_bmi2_fill_end
-
-sequenceDecs_decodeSync_bmi2_fill_byte_by_byte:
-	CMPQ    BX, $0x00
-	JLE     sequenceDecs_decodeSync_bmi2_fill_end
-	CMPQ    DX, $0x07
-	JLE     sequenceDecs_decodeSync_bmi2_fill_end
-	SHLQ    $0x08, AX
-	SUBQ    $0x01, R12
-	SUBQ    $0x01, BX
-	SUBQ    $0x08, DX
-	MOVBQZX (R12), CX
-	ORQ     CX, AX
-	JMP     sequenceDecs_decodeSync_bmi2_fill_byte_by_byte
-
-sequenceDecs_decodeSync_bmi2_fill_end:
-	// Update offset
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, R8, R13
-	MOVQ   AX, R14
-	LEAQ   (DX)(R13*1), CX
-	ROLQ   CL, R14
-	BZHIQ  R13, R14, R14
-	MOVQ   CX, DX
-	MOVQ   R8, CX
-	SHRQ   $0x20, CX
-	ADDQ   R14, CX
-	MOVQ   CX, 8(SP)
-
-	// Update match length
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, DI, R13
-	MOVQ   AX, R14
-	LEAQ   (DX)(R13*1), CX
-	ROLQ   CL, R14
-	BZHIQ  R13, R14, R14
-	MOVQ   CX, DX
-	MOVQ   DI, CX
-	SHRQ   $0x20, CX
-	ADDQ   R14, CX
-	MOVQ   CX, 16(SP)
-
-	// Fill bitreader to have enough for the remaining
-	CMPQ BX, $0x08
-	JL   sequenceDecs_decodeSync_bmi2_fill_2_byte_by_byte
-	MOVQ DX, CX
-	SHRQ $0x03, CX
-	SUBQ CX, R12
-	MOVQ (R12), AX
-	SUBQ CX, BX
-	ANDQ $0x07, DX
-	JMP  sequenceDecs_decodeSync_bmi2_fill_2_end
-
-sequenceDecs_decodeSync_bmi2_fill_2_byte_by_byte:
-	CMPQ    BX, $0x00
-	JLE     sequenceDecs_decodeSync_bmi2_fill_2_end
-	CMPQ    DX, $0x07
-	JLE     sequenceDecs_decodeSync_bmi2_fill_2_end
-	SHLQ    $0x08, AX
-	SUBQ    $0x01, R12
-	SUBQ    $0x01, BX
-	SUBQ    $0x08, DX
-	MOVBQZX (R12), CX
-	ORQ     CX, AX
-	JMP     sequenceDecs_decodeSync_bmi2_fill_2_byte_by_byte
-
-sequenceDecs_decodeSync_bmi2_fill_2_end:
-	// Update literal length
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, SI, R13
-	MOVQ   AX, R14
-	LEAQ   (DX)(R13*1), CX
-	ROLQ   CL, R14
-	BZHIQ  R13, R14, R14
-	MOVQ   CX, DX
-	MOVQ   SI, CX
-	SHRQ   $0x20, CX
-	ADDQ   R14, CX
-	MOVQ   CX, 24(SP)
-
-	// Fill bitreader for state updates
-	MOVQ   R12, (SP)
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, R8, R12
-	MOVQ   ctx+16(FP), CX
-	CMPQ   96(CX), $0x00
-	JZ     sequenceDecs_decodeSync_bmi2_skip_update
-
-	// Update Literal Length State
-	MOVBQZX SI, R13
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, SI, SI
-	LEAQ    (DX)(R13*1), CX
-	MOVQ    AX, R14
-	MOVQ    CX, DX
-	ROLQ    CL, R14
-	BZHIQ   R13, R14, R14
-	ADDQ    R14, SI
-
-	// Load ctx.llTable
-	MOVQ ctx+16(FP), CX
-	MOVQ (CX), CX
-	MOVQ (CX)(SI*8), SI
-
-	// Update Match Length State
-	MOVBQZX DI, R13
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, DI, DI
-	LEAQ    (DX)(R13*1), CX
-	MOVQ    AX, R14
-	MOVQ    CX, DX
-	ROLQ    CL, R14
-	BZHIQ   R13, R14, R14
-	ADDQ    R14, DI
-
-	// Load ctx.mlTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 24(CX), CX
-	MOVQ (CX)(DI*8), DI
-
-	// Update Offset State
-	MOVBQZX R8, R13
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, R8, R8
-	LEAQ    (DX)(R13*1), CX
-	MOVQ    AX, R14
-	MOVQ    CX, DX
-	ROLQ    CL, R14
-	BZHIQ   R13, R14, R14
-	ADDQ    R14, R8
-
-	// Load ctx.ofTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 48(CX), CX
-	MOVQ (CX)(R8*8), R8
-
-sequenceDecs_decodeSync_bmi2_skip_update:
-	// Adjust offset
-	MOVQ   s+0(FP), CX
-	MOVQ   8(SP), R13
-	CMPQ   R12, $0x01
-	JBE    sequenceDecs_decodeSync_bmi2_adjust_offsetB_1_or_0
-	MOVUPS 144(CX), X0
-	MOVQ   R13, 144(CX)
-	MOVUPS X0, 152(CX)
-	JMP    sequenceDecs_decodeSync_bmi2_adjust_end
-
-sequenceDecs_decodeSync_bmi2_adjust_offsetB_1_or_0:
-	CMPQ 24(SP), $0x00000000
-	JNE  sequenceDecs_decodeSync_bmi2_adjust_offset_maybezero
-	INCQ R13
-	JMP  sequenceDecs_decodeSync_bmi2_adjust_offset_nonzero
-
-sequenceDecs_decodeSync_bmi2_adjust_offset_maybezero:
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decodeSync_bmi2_adjust_offset_nonzero
-	MOVQ  144(CX), R13
-	JMP   sequenceDecs_decodeSync_bmi2_adjust_end
-
-sequenceDecs_decodeSync_bmi2_adjust_offset_nonzero:
-	MOVQ    R13, R12
-	XORQ    R14, R14
-	MOVQ    $-1, R15
-	CMPQ    R13, $0x03
-	CMOVQEQ R14, R12
-	CMOVQEQ R15, R14
-	LEAQ    144(CX), R15
-	ADDQ    (R15)(R12*8), R14
-	JNZ     sequenceDecs_decodeSync_bmi2_adjust_temp_valid
-	MOVQ    $0x00000001, R14
-
-sequenceDecs_decodeSync_bmi2_adjust_temp_valid:
-	CMPQ R13, $0x01
-	JZ   sequenceDecs_decodeSync_bmi2_adjust_skip
-	MOVQ 152(CX), R12
-	MOVQ R12, 160(CX)
-
-sequenceDecs_decodeSync_bmi2_adjust_skip:
-	MOVQ 144(CX), R12
-	MOVQ R12, 152(CX)
-	MOVQ R14, 144(CX)
-	MOVQ R14, R13
-
-sequenceDecs_decodeSync_bmi2_adjust_end:
-	MOVQ R13, 8(SP)
-
-	// Check values
-	MOVQ  16(SP), CX
-	MOVQ  24(SP), R12
-	LEAQ  (CX)(R12*1), R14
-	MOVQ  s+0(FP), R15
-	ADDQ  R14, 256(R15)
-	MOVQ  ctx+16(FP), R14
-	SUBQ  R12, 104(R14)
-	JS    error_not_enough_literals
-	CMPQ  CX, $0x00020002
-	JA    sequenceDecs_decodeSync_bmi2_error_match_len_too_big
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decodeSync_bmi2_match_len_ofs_ok
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decodeSync_bmi2_error_match_len_ofs_mismatch
-
-sequenceDecs_decodeSync_bmi2_match_len_ofs_ok:
-	MOVQ 24(SP), CX
-	MOVQ 8(SP), R12
-	MOVQ 16(SP), R13
-
-	// Check if we have enough space in s.out
-	LEAQ (CX)(R13*1), R14
-	ADDQ R9, R14
-	CMPQ R14, 32(SP)
-	JA   error_not_enough_space
-
-	// Copy literals
-	TESTQ CX, CX
-	JZ    check_offset
-	XORQ  R14, R14
-	TESTQ $0x00000001, CX
-	JZ    copy_1_word
-	MOVB  (R10)(R14*1), R15
-	MOVB  R15, (R9)(R14*1)
-	ADDQ  $0x01, R14
-
-copy_1_word:
-	TESTQ $0x00000002, CX
-	JZ    copy_1_dword
-	MOVW  (R10)(R14*1), R15
-	MOVW  R15, (R9)(R14*1)
-	ADDQ  $0x02, R14
-
-copy_1_dword:
-	TESTQ $0x00000004, CX
-	JZ    copy_1_qword
-	MOVL  (R10)(R14*1), R15
-	MOVL  R15, (R9)(R14*1)
-	ADDQ  $0x04, R14
-
-copy_1_qword:
-	TESTQ $0x00000008, CX
-	JZ    copy_1_test
-	MOVQ  (R10)(R14*1), R15
-	MOVQ  R15, (R9)(R14*1)
-	ADDQ  $0x08, R14
-	JMP   copy_1_test
-
-copy_1:
-	MOVUPS (R10)(R14*1), X0
-	MOVUPS X0, (R9)(R14*1)
-	ADDQ   $0x10, R14
-
-copy_1_test:
-	CMPQ R14, CX
-	JB   copy_1
-	ADDQ CX, R10
-	ADDQ CX, R9
-	ADDQ CX, R11
-
-	// Malformed input if seq.mo > t+len(hist) || seq.mo > s.windowSize)
-check_offset:
-	MOVQ R11, CX
-	ADDQ 40(SP), CX
-	CMPQ R12, CX
-	JG   error_match_off_too_big
-	CMPQ R12, 56(SP)
-	JG   error_match_off_too_big
-
-	// Copy match from history
-	MOVQ  R12, CX
-	SUBQ  R11, CX
-	JLS   copy_match
-	MOVQ  48(SP), R14
-	SUBQ  CX, R14
-	CMPQ  R13, CX
-	JGE   copy_all_from_history
-	XORQ  CX, CX
-	TESTQ $0x00000001, R13
-	JZ    copy_4_word
-	MOVB  (R14)(CX*1), R12
-	MOVB  R12, (R9)(CX*1)
-	ADDQ  $0x01, CX
-
-copy_4_word:
-	TESTQ $0x00000002, R13
-	JZ    copy_4_dword
-	MOVW  (R14)(CX*1), R12
-	MOVW  R12, (R9)(CX*1)
-	ADDQ  $0x02, CX
-
-copy_4_dword:
-	TESTQ $0x00000004, R13
-	JZ    copy_4_qword
-	MOVL  (R14)(CX*1), R12
-	MOVL  R12, (R9)(CX*1)
-	ADDQ  $0x04, CX
-
-copy_4_qword:
-	TESTQ $0x00000008, R13
-	JZ    copy_4_test
-	MOVQ  (R14)(CX*1), R12
-	MOVQ  R12, (R9)(CX*1)
-	ADDQ  $0x08, CX
-	JMP   copy_4_test
-
-copy_4:
-	MOVUPS (R14)(CX*1), X0
-	MOVUPS X0, (R9)(CX*1)
-	ADDQ   $0x10, CX
-
-copy_4_test:
-	CMPQ CX, R13
-	JB   copy_4
-	ADDQ R13, R11
-	ADDQ R13, R9
-	JMP  handle_loop
-	JMP loop_finished
-
-copy_all_from_history:
-	XORQ  R15, R15
-	TESTQ $0x00000001, CX
-	JZ    copy_5_word
-	MOVB  (R14)(R15*1), BP
-	MOVB  BP, (R9)(R15*1)
-	ADDQ  $0x01, R15
-
-copy_5_word:
-	TESTQ $0x00000002, CX
-	JZ    copy_5_dword
-	MOVW  (R14)(R15*1), BP
-	MOVW  BP, (R9)(R15*1)
-	ADDQ  $0x02, R15
-
-copy_5_dword:
-	TESTQ $0x00000004, CX
-	JZ    copy_5_qword
-	MOVL  (R14)(R15*1), BP
-	MOVL  BP, (R9)(R15*1)
-	ADDQ  $0x04, R15
-
-copy_5_qword:
-	TESTQ $0x00000008, CX
-	JZ    copy_5_test
-	MOVQ  (R14)(R15*1), BP
-	MOVQ  BP, (R9)(R15*1)
-	ADDQ  $0x08, R15
-	JMP   copy_5_test
-
-copy_5:
-	MOVUPS (R14)(R15*1), X0
-	MOVUPS X0, (R9)(R15*1)
-	ADDQ   $0x10, R15
-
-copy_5_test:
-	CMPQ R15, CX
-	JB   copy_5
-	ADDQ CX, R9
-	ADDQ CX, R11
-	SUBQ CX, R13
-
-	// Copy match from the current buffer
-copy_match:
-	TESTQ R13, R13
-	JZ    handle_loop
-	MOVQ  R9, CX
-	SUBQ  R12, CX
-
-	// ml <= mo
-	CMPQ R13, R12
-	JA   copy_overlapping_match
-
-	// Copy non-overlapping match
-	XORQ R12, R12
-
-copy_2:
-	MOVUPS (CX)(R12*1), X0
-	MOVUPS X0, (R9)(R12*1)
-	ADDQ   $0x10, R12
-	CMPQ   R12, R13
-	JB     copy_2
-	ADDQ   R13, R9
-	ADDQ   R13, R11
-	JMP    handle_loop
-
-	// Copy overlapping match
-copy_overlapping_match:
-	XORQ R12, R12
-
-copy_slow_3:
-	MOVB (CX)(R12*1), R14
-	MOVB R14, (R9)(R12*1)
-	INCQ R12
-	CMPQ R12, R13
-	JB   copy_slow_3
-	ADDQ R13, R9
-	ADDQ R13, R11
-
-handle_loop:
-	MOVQ ctx+16(FP), CX
-	DECQ 96(CX)
-	JNS  sequenceDecs_decodeSync_bmi2_main_loop
-
-loop_finished:
-	MOVQ br+8(FP), CX
-	MOVQ AX, 32(CX)
-	MOVB DL, 40(CX)
-	MOVQ BX, 24(CX)
-
-	// Update the context
-	MOVQ ctx+16(FP), AX
-	MOVQ R11, 136(AX)
-	MOVQ 144(AX), CX
-	SUBQ CX, R10
-	MOVQ R10, 168(AX)
-
-	// Return success
-	MOVQ $0x00000000, ret+24(FP)
-	RET
-
-	// Return with match length error
-sequenceDecs_decodeSync_bmi2_error_match_len_ofs_mismatch:
-	MOVQ 16(SP), AX
-	MOVQ ctx+16(FP), CX
-	MOVQ AX, 216(CX)
-	MOVQ $0x00000001, ret+24(FP)
-	RET
-
-	// Return with match too long error
-sequenceDecs_decodeSync_bmi2_error_match_len_too_big:
-	MOVQ ctx+16(FP), AX
-	MOVQ 16(SP), CX
-	MOVQ CX, 216(AX)
-	MOVQ $0x00000002, ret+24(FP)
-	RET
-
-	// Return with match offset too long error
-error_match_off_too_big:
-	MOVQ ctx+16(FP), AX
-	MOVQ 8(SP), CX
-	MOVQ CX, 224(AX)
-	MOVQ R11, 136(AX)
-	MOVQ $0x00000003, ret+24(FP)
-	RET
-
-	// Return with not enough literals error
-error_not_enough_literals:
-	MOVQ ctx+16(FP), AX
-	MOVQ 24(SP), CX
-	MOVQ CX, 208(AX)
-	MOVQ $0x00000004, ret+24(FP)
-	RET
-
-	// Return with not enough output space error
-error_not_enough_space:
-	MOVQ ctx+16(FP), AX
-	MOVQ 24(SP), CX
-	MOVQ CX, 208(AX)
-	MOVQ 16(SP), CX
-	MOVQ CX, 216(AX)
-	MOVQ R11, 136(AX)
-	MOVQ $0x00000005, ret+24(FP)
-	RET
-
-// func sequenceDecs_decodeSync_safe_amd64(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
-// Requires: CMOV, SSE
-TEXT ·sequenceDecs_decodeSync_safe_amd64(SB), $64-32
-	MOVQ    br+8(FP), AX
-	MOVQ    32(AX), DX
-	MOVBQZX 40(AX), BX
-	MOVQ    24(AX), SI
-	MOVQ    (AX), AX
-	ADDQ    SI, AX
-	MOVQ    AX, (SP)
-	MOVQ    ctx+16(FP), AX
-	MOVQ    72(AX), DI
-	MOVQ    80(AX), R8
-	MOVQ    88(AX), R9
-	MOVQ    112(AX), R10
-	MOVQ    128(AX), CX
-	MOVQ    CX, 32(SP)
-	MOVQ    144(AX), R11
-	MOVQ    136(AX), R12
-	MOVQ    200(AX), CX
-	MOVQ    CX, 56(SP)
-	MOVQ    176(AX), CX
-	MOVQ    CX, 48(SP)
-	MOVQ    184(AX), AX
-	MOVQ    AX, 40(SP)
-	MOVQ    40(SP), AX
-	ADDQ    AX, 48(SP)
-
-	// Calculate poiter to s.out[cap(s.out)] (a past-end pointer)
-	ADDQ R10, 32(SP)
-
-	// outBase += outPosition
-	ADDQ R12, R10
-
-sequenceDecs_decodeSync_safe_amd64_main_loop:
-	MOVQ (SP), R13
-
-	// Fill bitreader to have enough for the offset and match length.
-	CMPQ SI, $0x08
-	JL   sequenceDecs_decodeSync_safe_amd64_fill_byte_by_byte
-	MOVQ BX, AX
-	SHRQ $0x03, AX
-	SUBQ AX, R13
-	MOVQ (R13), DX
-	SUBQ AX, SI
-	ANDQ $0x07, BX
-	JMP  sequenceDecs_decodeSync_safe_amd64_fill_end
-
-sequenceDecs_decodeSync_safe_amd64_fill_byte_by_byte:
-	CMPQ    SI, $0x00
-	JLE     sequenceDecs_decodeSync_safe_amd64_fill_end
-	CMPQ    BX, $0x07
-	JLE     sequenceDecs_decodeSync_safe_amd64_fill_end
-	SHLQ    $0x08, DX
-	SUBQ    $0x01, R13
-	SUBQ    $0x01, SI
-	SUBQ    $0x08, BX
-	MOVBQZX (R13), AX
-	ORQ     AX, DX
-	JMP     sequenceDecs_decodeSync_safe_amd64_fill_byte_by_byte
-
-sequenceDecs_decodeSync_safe_amd64_fill_end:
-	// Update offset
-	MOVQ    R9, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R14
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R14
-	ADDQ    R14, AX
-	MOVQ    AX, 8(SP)
-
-	// Update match length
-	MOVQ    R8, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R14
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R14
-	ADDQ    R14, AX
-	MOVQ    AX, 16(SP)
-
-	// Fill bitreader to have enough for the remaining
-	CMPQ SI, $0x08
-	JL   sequenceDecs_decodeSync_safe_amd64_fill_2_byte_by_byte
-	MOVQ BX, AX
-	SHRQ $0x03, AX
-	SUBQ AX, R13
-	MOVQ (R13), DX
-	SUBQ AX, SI
-	ANDQ $0x07, BX
-	JMP  sequenceDecs_decodeSync_safe_amd64_fill_2_end
-
-sequenceDecs_decodeSync_safe_amd64_fill_2_byte_by_byte:
-	CMPQ    SI, $0x00
-	JLE     sequenceDecs_decodeSync_safe_amd64_fill_2_end
-	CMPQ    BX, $0x07
-	JLE     sequenceDecs_decodeSync_safe_amd64_fill_2_end
-	SHLQ    $0x08, DX
-	SUBQ    $0x01, R13
-	SUBQ    $0x01, SI
-	SUBQ    $0x08, BX
-	MOVBQZX (R13), AX
-	ORQ     AX, DX
-	JMP     sequenceDecs_decodeSync_safe_amd64_fill_2_byte_by_byte
-
-sequenceDecs_decodeSync_safe_amd64_fill_2_end:
-	// Update literal length
-	MOVQ    DI, AX
-	MOVQ    BX, CX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVB    AH, CL
-	ADDQ    CX, BX
-	NEGL    CX
-	SHRQ    CL, R14
-	SHRQ    $0x20, AX
-	TESTQ   CX, CX
-	CMOVQEQ CX, R14
-	ADDQ    R14, AX
-	MOVQ    AX, 24(SP)
-
-	// Fill bitreader for state updates
-	MOVQ    R13, (SP)
-	MOVQ    R9, AX
-	SHRQ    $0x08, AX
-	MOVBQZX AL, AX
-	MOVQ    ctx+16(FP), CX
-	CMPQ    96(CX), $0x00
-	JZ      sequenceDecs_decodeSync_safe_amd64_skip_update
-
-	// Update Literal Length State
-	MOVBQZX DI, R13
-	SHRQ    $0x10, DI
-	MOVWQZX DI, DI
-	CMPQ    R13, $0x00
-	JZ      sequenceDecs_decodeSync_safe_amd64_llState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R13, BX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVQ    R13, CX
-	NEGQ    CX
-	SHRQ    CL, R14
-	ADDQ    R14, DI
-
-sequenceDecs_decodeSync_safe_amd64_llState_updateState_skip_zero:
-	// Load ctx.llTable
-	MOVQ ctx+16(FP), CX
-	MOVQ (CX), CX
-	MOVQ (CX)(DI*8), DI
-
-	// Update Match Length State
-	MOVBQZX R8, R13
-	SHRQ    $0x10, R8
-	MOVWQZX R8, R8
-	CMPQ    R13, $0x00
-	JZ      sequenceDecs_decodeSync_safe_amd64_mlState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R13, BX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVQ    R13, CX
-	NEGQ    CX
-	SHRQ    CL, R14
-	ADDQ    R14, R8
-
-sequenceDecs_decodeSync_safe_amd64_mlState_updateState_skip_zero:
-	// Load ctx.mlTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 24(CX), CX
-	MOVQ (CX)(R8*8), R8
-
-	// Update Offset State
-	MOVBQZX R9, R13
-	SHRQ    $0x10, R9
-	MOVWQZX R9, R9
-	CMPQ    R13, $0x00
-	JZ      sequenceDecs_decodeSync_safe_amd64_ofState_updateState_skip_zero
-	MOVQ    BX, CX
-	ADDQ    R13, BX
-	MOVQ    DX, R14
-	SHLQ    CL, R14
-	MOVQ    R13, CX
-	NEGQ    CX
-	SHRQ    CL, R14
-	ADDQ    R14, R9
-
-sequenceDecs_decodeSync_safe_amd64_ofState_updateState_skip_zero:
-	// Load ctx.ofTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 48(CX), CX
-	MOVQ (CX)(R9*8), R9
-
-sequenceDecs_decodeSync_safe_amd64_skip_update:
-	// Adjust offset
-	MOVQ   s+0(FP), CX
-	MOVQ   8(SP), R13
-	CMPQ   AX, $0x01
-	JBE    sequenceDecs_decodeSync_safe_amd64_adjust_offsetB_1_or_0
-	MOVUPS 144(CX), X0
-	MOVQ   R13, 144(CX)
-	MOVUPS X0, 152(CX)
-	JMP    sequenceDecs_decodeSync_safe_amd64_adjust_end
-
-sequenceDecs_decodeSync_safe_amd64_adjust_offsetB_1_or_0:
-	CMPQ 24(SP), $0x00000000
-	JNE  sequenceDecs_decodeSync_safe_amd64_adjust_offset_maybezero
-	INCQ R13
-	JMP  sequenceDecs_decodeSync_safe_amd64_adjust_offset_nonzero
-
-sequenceDecs_decodeSync_safe_amd64_adjust_offset_maybezero:
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decodeSync_safe_amd64_adjust_offset_nonzero
-	MOVQ  144(CX), R13
-	JMP   sequenceDecs_decodeSync_safe_amd64_adjust_end
-
-sequenceDecs_decodeSync_safe_amd64_adjust_offset_nonzero:
-	MOVQ    R13, AX
-	XORQ    R14, R14
-	MOVQ    $-1, R15
-	CMPQ    R13, $0x03
-	CMOVQEQ R14, AX
-	CMOVQEQ R15, R14
-	LEAQ    144(CX), R15
-	ADDQ    (R15)(AX*8), R14
-	JNZ     sequenceDecs_decodeSync_safe_amd64_adjust_temp_valid
-	MOVQ    $0x00000001, R14
-
-sequenceDecs_decodeSync_safe_amd64_adjust_temp_valid:
-	CMPQ R13, $0x01
-	JZ   sequenceDecs_decodeSync_safe_amd64_adjust_skip
-	MOVQ 152(CX), AX
-	MOVQ AX, 160(CX)
-
-sequenceDecs_decodeSync_safe_amd64_adjust_skip:
-	MOVQ 144(CX), AX
-	MOVQ AX, 152(CX)
-	MOVQ R14, 144(CX)
-	MOVQ R14, R13
-
-sequenceDecs_decodeSync_safe_amd64_adjust_end:
-	MOVQ R13, 8(SP)
-
-	// Check values
-	MOVQ  16(SP), AX
-	MOVQ  24(SP), CX
-	LEAQ  (AX)(CX*1), R14
-	MOVQ  s+0(FP), R15
-	ADDQ  R14, 256(R15)
-	MOVQ  ctx+16(FP), R14
-	SUBQ  CX, 104(R14)
-	JS    error_not_enough_literals
-	CMPQ  AX, $0x00020002
-	JA    sequenceDecs_decodeSync_safe_amd64_error_match_len_too_big
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decodeSync_safe_amd64_match_len_ofs_ok
-	TESTQ AX, AX
-	JNZ   sequenceDecs_decodeSync_safe_amd64_error_match_len_ofs_mismatch
-
-sequenceDecs_decodeSync_safe_amd64_match_len_ofs_ok:
-	MOVQ 24(SP), AX
-	MOVQ 8(SP), CX
-	MOVQ 16(SP), R13
-
-	// Check if we have enough space in s.out
-	LEAQ (AX)(R13*1), R14
-	ADDQ R10, R14
-	CMPQ R14, 32(SP)
-	JA   error_not_enough_space
-
-	// Copy literals
-	TESTQ AX, AX
-	JZ    check_offset
-	XORQ  R14, R14
-	TESTQ $0x00000001, AX
-	JZ    copy_1_word
-	MOVB  (R11)(R14*1), R15
-	MOVB  R15, (R10)(R14*1)
-	ADDQ  $0x01, R14
-
-copy_1_word:
-	TESTQ $0x00000002, AX
-	JZ    copy_1_dword
-	MOVW  (R11)(R14*1), R15
-	MOVW  R15, (R10)(R14*1)
-	ADDQ  $0x02, R14
-
-copy_1_dword:
-	TESTQ $0x00000004, AX
-	JZ    copy_1_qword
-	MOVL  (R11)(R14*1), R15
-	MOVL  R15, (R10)(R14*1)
-	ADDQ  $0x04, R14
-
-copy_1_qword:
-	TESTQ $0x00000008, AX
-	JZ    copy_1_test
-	MOVQ  (R11)(R14*1), R15
-	MOVQ  R15, (R10)(R14*1)
-	ADDQ  $0x08, R14
-	JMP   copy_1_test
-
-copy_1:
-	MOVUPS (R11)(R14*1), X0
-	MOVUPS X0, (R10)(R14*1)
-	ADDQ   $0x10, R14
-
-copy_1_test:
-	CMPQ R14, AX
-	JB   copy_1
-	ADDQ AX, R11
-	ADDQ AX, R10
-	ADDQ AX, R12
-
-	// Malformed input if seq.mo > t+len(hist) || seq.mo > s.windowSize)
-check_offset:
-	MOVQ R12, AX
-	ADDQ 40(SP), AX
-	CMPQ CX, AX
-	JG   error_match_off_too_big
-	CMPQ CX, 56(SP)
-	JG   error_match_off_too_big
-
-	// Copy match from history
-	MOVQ  CX, AX
-	SUBQ  R12, AX
-	JLS   copy_match
-	MOVQ  48(SP), R14
-	SUBQ  AX, R14
-	CMPQ  R13, AX
-	JGE   copy_all_from_history
-	XORQ  AX, AX
-	TESTQ $0x00000001, R13
-	JZ    copy_4_word
-	MOVB  (R14)(AX*1), CL
-	MOVB  CL, (R10)(AX*1)
-	ADDQ  $0x01, AX
-
-copy_4_word:
-	TESTQ $0x00000002, R13
-	JZ    copy_4_dword
-	MOVW  (R14)(AX*1), CX
-	MOVW  CX, (R10)(AX*1)
-	ADDQ  $0x02, AX
-
-copy_4_dword:
-	TESTQ $0x00000004, R13
-	JZ    copy_4_qword
-	MOVL  (R14)(AX*1), CX
-	MOVL  CX, (R10)(AX*1)
-	ADDQ  $0x04, AX
-
-copy_4_qword:
-	TESTQ $0x00000008, R13
-	JZ    copy_4_test
-	MOVQ  (R14)(AX*1), CX
-	MOVQ  CX, (R10)(AX*1)
-	ADDQ  $0x08, AX
-	JMP   copy_4_test
-
-copy_4:
-	MOVUPS (R14)(AX*1), X0
-	MOVUPS X0, (R10)(AX*1)
-	ADDQ   $0x10, AX
-
-copy_4_test:
-	CMPQ AX, R13
-	JB   copy_4
-	ADDQ R13, R12
-	ADDQ R13, R10
-	JMP  handle_loop
-	JMP loop_finished
-
-copy_all_from_history:
-	XORQ  R15, R15
-	TESTQ $0x00000001, AX
-	JZ    copy_5_word
-	MOVB  (R14)(R15*1), BP
-	MOVB  BP, (R10)(R15*1)
-	ADDQ  $0x01, R15
-
-copy_5_word:
-	TESTQ $0x00000002, AX
-	JZ    copy_5_dword
-	MOVW  (R14)(R15*1), BP
-	MOVW  BP, (R10)(R15*1)
-	ADDQ  $0x02, R15
-
-copy_5_dword:
-	TESTQ $0x00000004, AX
-	JZ    copy_5_qword
-	MOVL  (R14)(R15*1), BP
-	MOVL  BP, (R10)(R15*1)
-	ADDQ  $0x04, R15
-
-copy_5_qword:
-	TESTQ $0x00000008, AX
-	JZ    copy_5_test
-	MOVQ  (R14)(R15*1), BP
-	MOVQ  BP, (R10)(R15*1)
-	ADDQ  $0x08, R15
-	JMP   copy_5_test
-
-copy_5:
-	MOVUPS (R14)(R15*1), X0
-	MOVUPS X0, (R10)(R15*1)
-	ADDQ   $0x10, R15
-
-copy_5_test:
-	CMPQ R15, AX
-	JB   copy_5
-	ADDQ AX, R10
-	ADDQ AX, R12
-	SUBQ AX, R13
-
-	// Copy match from the current buffer
-copy_match:
-	TESTQ R13, R13
-	JZ    handle_loop
-	MOVQ  R10, AX
-	SUBQ  CX, AX
-
-	// ml <= mo
-	CMPQ R13, CX
-	JA   copy_overlapping_match
-
-	// Copy non-overlapping match
-	XORQ  CX, CX
-	TESTQ $0x00000001, R13
-	JZ    copy_2_word
-	MOVB  (AX)(CX*1), R14
-	MOVB  R14, (R10)(CX*1)
-	ADDQ  $0x01, CX
-
-copy_2_word:
-	TESTQ $0x00000002, R13
-	JZ    copy_2_dword
-	MOVW  (AX)(CX*1), R14
-	MOVW  R14, (R10)(CX*1)
-	ADDQ  $0x02, CX
-
-copy_2_dword:
-	TESTQ $0x00000004, R13
-	JZ    copy_2_qword
-	MOVL  (AX)(CX*1), R14
-	MOVL  R14, (R10)(CX*1)
-	ADDQ  $0x04, CX
-
-copy_2_qword:
-	TESTQ $0x00000008, R13
-	JZ    copy_2_test
-	MOVQ  (AX)(CX*1), R14
-	MOVQ  R14, (R10)(CX*1)
-	ADDQ  $0x08, CX
-	JMP   copy_2_test
-
-copy_2:
-	MOVUPS (AX)(CX*1), X0
-	MOVUPS X0, (R10)(CX*1)
-	ADDQ   $0x10, CX
-
-copy_2_test:
-	CMPQ CX, R13
-	JB   copy_2
-	ADDQ R13, R10
-	ADDQ R13, R12
-	JMP  handle_loop
-
-	// Copy overlapping match
-copy_overlapping_match:
-	XORQ CX, CX
-
-copy_slow_3:
-	MOVB (AX)(CX*1), R14
-	MOVB R14, (R10)(CX*1)
-	INCQ CX
-	CMPQ CX, R13
-	JB   copy_slow_3
-	ADDQ R13, R10
-	ADDQ R13, R12
-
-handle_loop:
-	MOVQ ctx+16(FP), AX
-	DECQ 96(AX)
-	JNS  sequenceDecs_decodeSync_safe_amd64_main_loop
-
-loop_finished:
-	MOVQ br+8(FP), AX
-	MOVQ DX, 32(AX)
-	MOVB BL, 40(AX)
-	MOVQ SI, 24(AX)
-
-	// Update the context
-	MOVQ ctx+16(FP), AX
-	MOVQ R12, 136(AX)
-	MOVQ 144(AX), CX
-	SUBQ CX, R11
-	MOVQ R11, 168(AX)
-
-	// Return success
-	MOVQ $0x00000000, ret+24(FP)
-	RET
-
-	// Return with match length error
-sequenceDecs_decodeSync_safe_amd64_error_match_len_ofs_mismatch:
-	MOVQ 16(SP), AX
-	MOVQ ctx+16(FP), CX
-	MOVQ AX, 216(CX)
-	MOVQ $0x00000001, ret+24(FP)
-	RET
-
-	// Return with match too long error
-sequenceDecs_decodeSync_safe_amd64_error_match_len_too_big:
-	MOVQ ctx+16(FP), AX
-	MOVQ 16(SP), CX
-	MOVQ CX, 216(AX)
-	MOVQ $0x00000002, ret+24(FP)
-	RET
-
-	// Return with match offset too long error
-error_match_off_too_big:
-	MOVQ ctx+16(FP), AX
-	MOVQ 8(SP), CX
-	MOVQ CX, 224(AX)
-	MOVQ R12, 136(AX)
-	MOVQ $0x00000003, ret+24(FP)
-	RET
-
-	// Return with not enough literals error
-error_not_enough_literals:
-	MOVQ ctx+16(FP), AX
-	MOVQ 24(SP), CX
-	MOVQ CX, 208(AX)
-	MOVQ $0x00000004, ret+24(FP)
-	RET
-
-	// Return with not enough output space error
-error_not_enough_space:
-	MOVQ ctx+16(FP), AX
-	MOVQ 24(SP), CX
-	MOVQ CX, 208(AX)
-	MOVQ 16(SP), CX
-	MOVQ CX, 216(AX)
-	MOVQ R12, 136(AX)
-	MOVQ $0x00000005, ret+24(FP)
-	RET
-
-// func sequenceDecs_decodeSync_safe_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
-// Requires: BMI, BMI2, CMOV, SSE
-TEXT ·sequenceDecs_decodeSync_safe_bmi2(SB), $64-32
-	MOVQ    br+8(FP), CX
-	MOVQ    32(CX), AX
-	MOVBQZX 40(CX), DX
-	MOVQ    24(CX), BX
-	MOVQ    (CX), CX
-	ADDQ    BX, CX
-	MOVQ    CX, (SP)
-	MOVQ    ctx+16(FP), CX
-	MOVQ    72(CX), SI
-	MOVQ    80(CX), DI
-	MOVQ    88(CX), R8
-	MOVQ    112(CX), R9
-	MOVQ    128(CX), R10
-	MOVQ    R10, 32(SP)
-	MOVQ    144(CX), R10
-	MOVQ    136(CX), R11
-	MOVQ    200(CX), R12
-	MOVQ    R12, 56(SP)
-	MOVQ    176(CX), R12
-	MOVQ    R12, 48(SP)
-	MOVQ    184(CX), CX
-	MOVQ    CX, 40(SP)
-	MOVQ    40(SP), CX
-	ADDQ    CX, 48(SP)
-
-	// Calculate poiter to s.out[cap(s.out)] (a past-end pointer)
-	ADDQ R9, 32(SP)
-
-	// outBase += outPosition
-	ADDQ R11, R9
-
-sequenceDecs_decodeSync_safe_bmi2_main_loop:
-	MOVQ (SP), R12
-
-	// Fill bitreader to have enough for the offset and match length.
-	CMPQ BX, $0x08
-	JL   sequenceDecs_decodeSync_safe_bmi2_fill_byte_by_byte
-	MOVQ DX, CX
-	SHRQ $0x03, CX
-	SUBQ CX, R12
-	MOVQ (R12), AX
-	SUBQ CX, BX
-	ANDQ $0x07, DX
-	JMP  sequenceDecs_decodeSync_safe_bmi2_fill_end
-
-sequenceDecs_decodeSync_safe_bmi2_fill_byte_by_byte:
-	CMPQ    BX, $0x00
-	JLE     sequenceDecs_decodeSync_safe_bmi2_fill_end
-	CMPQ    DX, $0x07
-	JLE     sequenceDecs_decodeSync_safe_bmi2_fill_end
-	SHLQ    $0x08, AX
-	SUBQ    $0x01, R12
-	SUBQ    $0x01, BX
-	SUBQ    $0x08, DX
-	MOVBQZX (R12), CX
-	ORQ     CX, AX
-	JMP     sequenceDecs_decodeSync_safe_bmi2_fill_byte_by_byte
-
-sequenceDecs_decodeSync_safe_bmi2_fill_end:
-	// Update offset
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, R8, R13
-	MOVQ   AX, R14
-	LEAQ   (DX)(R13*1), CX
-	ROLQ   CL, R14
-	BZHIQ  R13, R14, R14
-	MOVQ   CX, DX
-	MOVQ   R8, CX
-	SHRQ   $0x20, CX
-	ADDQ   R14, CX
-	MOVQ   CX, 8(SP)
-
-	// Update match length
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, DI, R13
-	MOVQ   AX, R14
-	LEAQ   (DX)(R13*1), CX
-	ROLQ   CL, R14
-	BZHIQ  R13, R14, R14
-	MOVQ   CX, DX
-	MOVQ   DI, CX
-	SHRQ   $0x20, CX
-	ADDQ   R14, CX
-	MOVQ   CX, 16(SP)
-
-	// Fill bitreader to have enough for the remaining
-	CMPQ BX, $0x08
-	JL   sequenceDecs_decodeSync_safe_bmi2_fill_2_byte_by_byte
-	MOVQ DX, CX
-	SHRQ $0x03, CX
-	SUBQ CX, R12
-	MOVQ (R12), AX
-	SUBQ CX, BX
-	ANDQ $0x07, DX
-	JMP  sequenceDecs_decodeSync_safe_bmi2_fill_2_end
-
-sequenceDecs_decodeSync_safe_bmi2_fill_2_byte_by_byte:
-	CMPQ    BX, $0x00
-	JLE     sequenceDecs_decodeSync_safe_bmi2_fill_2_end
-	CMPQ    DX, $0x07
-	JLE     sequenceDecs_decodeSync_safe_bmi2_fill_2_end
-	SHLQ    $0x08, AX
-	SUBQ    $0x01, R12
-	SUBQ    $0x01, BX
-	SUBQ    $0x08, DX
-	MOVBQZX (R12), CX
-	ORQ     CX, AX
-	JMP     sequenceDecs_decodeSync_safe_bmi2_fill_2_byte_by_byte
-
-sequenceDecs_decodeSync_safe_bmi2_fill_2_end:
-	// Update literal length
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, SI, R13
-	MOVQ   AX, R14
-	LEAQ   (DX)(R13*1), CX
-	ROLQ   CL, R14
-	BZHIQ  R13, R14, R14
-	MOVQ   CX, DX
-	MOVQ   SI, CX
-	SHRQ   $0x20, CX
-	ADDQ   R14, CX
-	MOVQ   CX, 24(SP)
-
-	// Fill bitreader for state updates
-	MOVQ   R12, (SP)
-	MOVQ   $0x00000808, CX
-	BEXTRQ CX, R8, R12
-	MOVQ   ctx+16(FP), CX
-	CMPQ   96(CX), $0x00
-	JZ     sequenceDecs_decodeSync_safe_bmi2_skip_update
-
-	// Update Literal Length State
-	MOVBQZX SI, R13
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, SI, SI
-	LEAQ    (DX)(R13*1), CX
-	MOVQ    AX, R14
-	MOVQ    CX, DX
-	ROLQ    CL, R14
-	BZHIQ   R13, R14, R14
-	ADDQ    R14, SI
-
-	// Load ctx.llTable
-	MOVQ ctx+16(FP), CX
-	MOVQ (CX), CX
-	MOVQ (CX)(SI*8), SI
-
-	// Update Match Length State
-	MOVBQZX DI, R13
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, DI, DI
-	LEAQ    (DX)(R13*1), CX
-	MOVQ    AX, R14
-	MOVQ    CX, DX
-	ROLQ    CL, R14
-	BZHIQ   R13, R14, R14
-	ADDQ    R14, DI
-
-	// Load ctx.mlTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 24(CX), CX
-	MOVQ (CX)(DI*8), DI
-
-	// Update Offset State
-	MOVBQZX R8, R13
-	MOVQ    $0x00001010, CX
-	BEXTRQ  CX, R8, R8
-	LEAQ    (DX)(R13*1), CX
-	MOVQ    AX, R14
-	MOVQ    CX, DX
-	ROLQ    CL, R14
-	BZHIQ   R13, R14, R14
-	ADDQ    R14, R8
-
-	// Load ctx.ofTable
-	MOVQ ctx+16(FP), CX
-	MOVQ 48(CX), CX
-	MOVQ (CX)(R8*8), R8
-
-sequenceDecs_decodeSync_safe_bmi2_skip_update:
-	// Adjust offset
-	MOVQ   s+0(FP), CX
-	MOVQ   8(SP), R13
-	CMPQ   R12, $0x01
-	JBE    sequenceDecs_decodeSync_safe_bmi2_adjust_offsetB_1_or_0
-	MOVUPS 144(CX), X0
-	MOVQ   R13, 144(CX)
-	MOVUPS X0, 152(CX)
-	JMP    sequenceDecs_decodeSync_safe_bmi2_adjust_end
-
-sequenceDecs_decodeSync_safe_bmi2_adjust_offsetB_1_or_0:
-	CMPQ 24(SP), $0x00000000
-	JNE  sequenceDecs_decodeSync_safe_bmi2_adjust_offset_maybezero
-	INCQ R13
-	JMP  sequenceDecs_decodeSync_safe_bmi2_adjust_offset_nonzero
-
-sequenceDecs_decodeSync_safe_bmi2_adjust_offset_maybezero:
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decodeSync_safe_bmi2_adjust_offset_nonzero
-	MOVQ  144(CX), R13
-	JMP   sequenceDecs_decodeSync_safe_bmi2_adjust_end
-
-sequenceDecs_decodeSync_safe_bmi2_adjust_offset_nonzero:
-	MOVQ    R13, R12
-	XORQ    R14, R14
-	MOVQ    $-1, R15
-	CMPQ    R13, $0x03
-	CMOVQEQ R14, R12
-	CMOVQEQ R15, R14
-	LEAQ    144(CX), R15
-	ADDQ    (R15)(R12*8), R14
-	JNZ     sequenceDecs_decodeSync_safe_bmi2_adjust_temp_valid
-	MOVQ    $0x00000001, R14
-
-sequenceDecs_decodeSync_safe_bmi2_adjust_temp_valid:
-	CMPQ R13, $0x01
-	JZ   sequenceDecs_decodeSync_safe_bmi2_adjust_skip
-	MOVQ 152(CX), R12
-	MOVQ R12, 160(CX)
-
-sequenceDecs_decodeSync_safe_bmi2_adjust_skip:
-	MOVQ 144(CX), R12
-	MOVQ R12, 152(CX)
-	MOVQ R14, 144(CX)
-	MOVQ R14, R13
-
-sequenceDecs_decodeSync_safe_bmi2_adjust_end:
-	MOVQ R13, 8(SP)
-
-	// Check values
-	MOVQ  16(SP), CX
-	MOVQ  24(SP), R12
-	LEAQ  (CX)(R12*1), R14
-	MOVQ  s+0(FP), R15
-	ADDQ  R14, 256(R15)
-	MOVQ  ctx+16(FP), R14
-	SUBQ  R12, 104(R14)
-	JS    error_not_enough_literals
-	CMPQ  CX, $0x00020002
-	JA    sequenceDecs_decodeSync_safe_bmi2_error_match_len_too_big
-	TESTQ R13, R13
-	JNZ   sequenceDecs_decodeSync_safe_bmi2_match_len_ofs_ok
-	TESTQ CX, CX
-	JNZ   sequenceDecs_decodeSync_safe_bmi2_error_match_len_ofs_mismatch
-
-sequenceDecs_decodeSync_safe_bmi2_match_len_ofs_ok:
-	MOVQ 24(SP), CX
-	MOVQ 8(SP), R12
-	MOVQ 16(SP), R13
-
-	// Check if we have enough space in s.out
-	LEAQ (CX)(R13*1), R14
-	ADDQ R9, R14
-	CMPQ R14, 32(SP)
-	JA   error_not_enough_space
-
-	// Copy literals
-	TESTQ CX, CX
-	JZ    check_offset
-	XORQ  R14, R14
-	TESTQ $0x00000001, CX
-	JZ    copy_1_word
-	MOVB  (R10)(R14*1), R15
-	MOVB  R15, (R9)(R14*1)
-	ADDQ  $0x01, R14
-
-copy_1_word:
-	TESTQ $0x00000002, CX
-	JZ    copy_1_dword
-	MOVW  (R10)(R14*1), R15
-	MOVW  R15, (R9)(R14*1)
-	ADDQ  $0x02, R14
-
-copy_1_dword:
-	TESTQ $0x00000004, CX
-	JZ    copy_1_qword
-	MOVL  (R10)(R14*1), R15
-	MOVL  R15, (R9)(R14*1)
-	ADDQ  $0x04, R14
-
-copy_1_qword:
-	TESTQ $0x00000008, CX
-	JZ    copy_1_test
-	MOVQ  (R10)(R14*1), R15
-	MOVQ  R15, (R9)(R14*1)
-	ADDQ  $0x08, R14
-	JMP   copy_1_test
-
-copy_1:
-	MOVUPS (R10)(R14*1), X0
-	MOVUPS X0, (R9)(R14*1)
-	ADDQ   $0x10, R14
-
-copy_1_test:
-	CMPQ R14, CX
-	JB   copy_1
-	ADDQ CX, R10
-	ADDQ CX, R9
-	ADDQ CX, R11
-
-	// Malformed input if seq.mo > t+len(hist) || seq.mo > s.windowSize)
-check_offset:
-	MOVQ R11, CX
-	ADDQ 40(SP), CX
-	CMPQ R12, CX
-	JG   error_match_off_too_big
-	CMPQ R12, 56(SP)
-	JG   error_match_off_too_big
-
-	// Copy match from history
-	MOVQ  R12, CX
-	SUBQ  R11, CX
-	JLS   copy_match
-	MOVQ  48(SP), R14
-	SUBQ  CX, R14
-	CMPQ  R13, CX
-	JGE   copy_all_from_history
-	XORQ  CX, CX
-	TESTQ $0x00000001, R13
-	JZ    copy_4_word
-	MOVB  (R14)(CX*1), R12
-	MOVB  R12, (R9)(CX*1)
-	ADDQ  $0x01, CX
-
-copy_4_word:
-	TESTQ $0x00000002, R13
-	JZ    copy_4_dword
-	MOVW  (R14)(CX*1), R12
-	MOVW  R12, (R9)(CX*1)
-	ADDQ  $0x02, CX
-
-copy_4_dword:
-	TESTQ $0x00000004, R13
-	JZ    copy_4_qword
-	MOVL  (R14)(CX*1), R12
-	MOVL  R12, (R9)(CX*1)
-	ADDQ  $0x04, CX
-
-copy_4_qword:
-	TESTQ $0x00000008, R13
-	JZ    copy_4_test
-	MOVQ  (R14)(CX*1), R12
-	MOVQ  R12, (R9)(CX*1)
-	ADDQ  $0x08, CX
-	JMP   copy_4_test
-
-copy_4:
-	MOVUPS (R14)(CX*1), X0
-	MOVUPS X0, (R9)(CX*1)
-	ADDQ   $0x10, CX
-
-copy_4_test:
-	CMPQ CX, R13
-	JB   copy_4
-	ADDQ R13, R11
-	ADDQ R13, R9
-	JMP  handle_loop
-	JMP loop_finished
-
-copy_all_from_history:
-	XORQ  R15, R15
-	TESTQ $0x00000001, CX
-	JZ    copy_5_word
-	MOVB  (R14)(R15*1), BP
-	MOVB  BP, (R9)(R15*1)
-	ADDQ  $0x01, R15
-
-copy_5_word:
-	TESTQ $0x00000002, CX
-	JZ    copy_5_dword
-	MOVW  (R14)(R15*1), BP
-	MOVW  BP, (R9)(R15*1)
-	ADDQ  $0x02, R15
-
-copy_5_dword:
-	TESTQ $0x00000004, CX
-	JZ    copy_5_qword
-	MOVL  (R14)(R15*1), BP
-	MOVL  BP, (R9)(R15*1)
-	ADDQ  $0x04, R15
-
-copy_5_qword:
-	TESTQ $0x00000008, CX
-	JZ    copy_5_test
-	MOVQ  (R14)(R15*1), BP
-	MOVQ  BP, (R9)(R15*1)
-	ADDQ  $0x08, R15
-	JMP   copy_5_test
-
-copy_5:
-	MOVUPS (R14)(R15*1), X0
-	MOVUPS X0, (R9)(R15*1)
-	ADDQ   $0x10, R15
-
-copy_5_test:
-	CMPQ R15, CX
-	JB   copy_5
-	ADDQ CX, R9
-	ADDQ CX, R11
-	SUBQ CX, R13
-
-	// Copy match from the current buffer
-copy_match:
-	TESTQ R13, R13
-	JZ    handle_loop
-	MOVQ  R9, CX
-	SUBQ  R12, CX
-
-	// ml <= mo
-	CMPQ R13, R12
-	JA   copy_overlapping_match
-
-	// Copy non-overlapping match
-	XORQ  R12, R12
-	TESTQ $0x00000001, R13
-	JZ    copy_2_word
-	MOVB  (CX)(R12*1), R14
-	MOVB  R14, (R9)(R12*1)
-	ADDQ  $0x01, R12
-
-copy_2_word:
-	TESTQ $0x00000002, R13
-	JZ    copy_2_dword
-	MOVW  (CX)(R12*1), R14
-	MOVW  R14, (R9)(R12*1)
-	ADDQ  $0x02, R12
-
-copy_2_dword:
-	TESTQ $0x00000004, R13
-	JZ    copy_2_qword
-	MOVL  (CX)(R12*1), R14
-	MOVL  R14, (R9)(R12*1)
-	ADDQ  $0x04, R12
-
-copy_2_qword:
-	TESTQ $0x00000008, R13
-	JZ    copy_2_test
-	MOVQ  (CX)(R12*1), R14
-	MOVQ  R14, (R9)(R12*1)
-	ADDQ  $0x08, R12
-	JMP   copy_2_test
-
-copy_2:
-	MOVUPS (CX)(R12*1), X0
-	MOVUPS X0, (R9)(R12*1)
-	ADDQ   $0x10, R12
-
-copy_2_test:
-	CMPQ R12, R13
-	JB   copy_2
-	ADDQ R13, R9
-	ADDQ R13, R11
-	JMP  handle_loop
-
-	// Copy overlapping match
-copy_overlapping_match:
-	XORQ R12, R12
-
-copy_slow_3:
-	MOVB (CX)(R12*1), R14
-	MOVB R14, (R9)(R12*1)
-	INCQ R12
-	CMPQ R12, R13
-	JB   copy_slow_3
-	ADDQ R13, R9
-	ADDQ R13, R11
-
-handle_loop:
-	MOVQ ctx+16(FP), CX
-	DECQ 96(CX)
-	JNS  sequenceDecs_decodeSync_safe_bmi2_main_loop
-
-loop_finished:
-	MOVQ br+8(FP), CX
-	MOVQ AX, 32(CX)
-	MOVB DL, 40(CX)
-	MOVQ BX, 24(CX)
-
-	// Update the context
-	MOVQ ctx+16(FP), AX
-	MOVQ R11, 136(AX)
-	MOVQ 144(AX), CX
-	SUBQ CX, R10
-	MOVQ R10, 168(AX)
-
-	// Return success
-	MOVQ $0x00000000, ret+24(FP)
-	RET
-
-	// Return with match length error
-sequenceDecs_decodeSync_safe_bmi2_error_match_len_ofs_mismatch:
-	MOVQ 16(SP), AX
-	MOVQ ctx+16(FP), CX
-	MOVQ AX, 216(CX)
-	MOVQ $0x00000001, ret+24(FP)
-	RET
-
-	// Return with match too long error
-sequenceDecs_decodeSync_safe_bmi2_error_match_len_too_big:
-	MOVQ ctx+16(FP), AX
-	MOVQ 16(SP), CX
-	MOVQ CX, 216(AX)
-	MOVQ $0x00000002, ret+24(FP)
-	RET
-
-	// Return with match offset too long error
-error_match_off_too_big:
-	MOVQ ctx+16(FP), AX
-	MOVQ 8(SP), CX
-	MOVQ CX, 224(AX)
-	MOVQ R11, 136(AX)
-	MOVQ $0x00000003, ret+24(FP)
-	RET
-
-	// Return with not enough literals error
-error_not_enough_literals:
-	MOVQ ctx+16(FP), AX
-	MOVQ 24(SP), CX
-	MOVQ CX, 208(AX)
-	MOVQ $0x00000004, ret+24(FP)
-	RET
-
-	// Return with not enough output space error
-error_not_enough_space:
-	MOVQ ctx+16(FP), AX
-	MOVQ 24(SP), CX
-	MOVQ CX, 208(AX)
-	MOVQ 16(SP), CX
-	MOVQ CX, 216(AX)
-	MOVQ R11, 136(AX)
-	MOVQ $0x00000005, ret+24(FP)
-	RET
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/seqdec_generic.go b/backend/vendor/github.com/klauspost/compress/zstd/seqdec_generic.go
deleted file mode 100644
index c3452bc3..00000000
--- a/backend/vendor/github.com/klauspost/compress/zstd/seqdec_generic.go
+++ /dev/null
@@ -1,237 +0,0 @@
-//go:build !amd64 || appengine || !gc || noasm
-// +build !amd64 appengine !gc noasm
-
-package zstd
-
-import (
-	"fmt"
-	"io"
-)
-
-// decode sequences from the stream with the provided history but without dictionary.
-func (s *sequenceDecs) decodeSyncSimple(hist []byte) (bool, error) {
-	return false, nil
-}
-
-// decode sequences from the stream without the provided history.
-func (s *sequenceDecs) decode(seqs []seqVals) error {
-	br := s.br
-
-	// Grab full sizes tables, to avoid bounds checks.
-	llTable, mlTable, ofTable := s.litLengths.fse.dt[:maxTablesize], s.matchLengths.fse.dt[:maxTablesize], s.offsets.fse.dt[:maxTablesize]
-	llState, mlState, ofState := s.litLengths.state.state, s.matchLengths.state.state, s.offsets.state.state
-	s.seqSize = 0
-	litRemain := len(s.literals)
-
-	maxBlockSize := maxCompressedBlockSize
-	if s.windowSize < maxBlockSize {
-		maxBlockSize = s.windowSize
-	}
-	for i := range seqs {
-		var ll, mo, ml int
-		if br.off > 4+((maxOffsetBits+16+16)>>3) {
-			// inlined function:
-			// ll, mo, ml = s.nextFast(br, llState, mlState, ofState)
-
-			// Final will not read from stream.
-			var llB, mlB, moB uint8
-			ll, llB = llState.final()
-			ml, mlB = mlState.final()
-			mo, moB = ofState.final()
-
-			// extra bits are stored in reverse order.
-			br.fillFast()
-			mo += br.getBits(moB)
-			if s.maxBits > 32 {
-				br.fillFast()
-			}
-			ml += br.getBits(mlB)
-			ll += br.getBits(llB)
-
-			if moB > 1 {
-				s.prevOffset[2] = s.prevOffset[1]
-				s.prevOffset[1] = s.prevOffset[0]
-				s.prevOffset[0] = mo
-			} else {
-				// mo = s.adjustOffset(mo, ll, moB)
-				// Inlined for rather big speedup
-				if ll == 0 {
-					// There is an exception though, when current sequence's literals_length = 0.
-					// In this case, repeated offsets are shifted by one, so an offset_value of 1 means Repeated_Offset2,
-					// an offset_value of 2 means Repeated_Offset3, and an offset_value of 3 means Repeated_Offset1 - 1_byte.
-					mo++
-				}
-
-				if mo == 0 {
-					mo = s.prevOffset[0]
-				} else {
-					var temp int
-					if mo == 3 {
-						temp = s.prevOffset[0] - 1
-					} else {
-						temp = s.prevOffset[mo]
-					}
-
-					if temp == 0 {
-						// 0 is not valid; input is corrupted; force offset to 1
-						println("WARNING: temp was 0")
-						temp = 1
-					}
-
-					if mo != 1 {
-						s.prevOffset[2] = s.prevOffset[1]
-					}
-					s.prevOffset[1] = s.prevOffset[0]
-					s.prevOffset[0] = temp
-					mo = temp
-				}
-			}
-			br.fillFast()
-		} else {
-			if br.overread() {
-				if debugDecoder {
-					printf("reading sequence %d, exceeded available data\n", i)
-				}
-				return io.ErrUnexpectedEOF
-			}
-			ll, mo, ml = s.next(br, llState, mlState, ofState)
-			br.fill()
-		}
-
-		if debugSequences {
-			println("Seq", i, "Litlen:", ll, "mo:", mo, "(abs) ml:", ml)
-		}
-		// Evaluate.
-		// We might be doing this async, so do it early.
-		if mo == 0 && ml > 0 {
-			return fmt.Errorf("zero matchoff and matchlen (%d) > 0", ml)
-		}
-		if ml > maxMatchLen {
-			return fmt.Errorf("match len (%d) bigger than max allowed length", ml)
-		}
-		s.seqSize += ll + ml
-		if s.seqSize > maxBlockSize {
-			return fmt.Errorf("output (%d) bigger than max block size (%d)", s.seqSize, maxBlockSize)
-		}
-		litRemain -= ll
-		if litRemain < 0 {
-			return fmt.Errorf("unexpected literal count, want %d bytes, but only %d is available", ll, litRemain+ll)
-		}
-		seqs[i] = seqVals{
-			ll: ll,
-			ml: ml,
-			mo: mo,
-		}
-		if i == len(seqs)-1 {
-			// This is the last sequence, so we shouldn't update state.
-			break
-		}
-
-		// Manually inlined, ~ 5-20% faster
-		// Update all 3 states at once. Approx 20% faster.
-		nBits := llState.nbBits() + mlState.nbBits() + ofState.nbBits()
-		if nBits == 0 {
-			llState = llTable[llState.newState()&maxTableMask]
-			mlState = mlTable[mlState.newState()&maxTableMask]
-			ofState = ofTable[ofState.newState()&maxTableMask]
-		} else {
-			bits := br.get32BitsFast(nBits)
-			lowBits := uint16(bits >> ((ofState.nbBits() + mlState.nbBits()) & 31))
-			llState = llTable[(llState.newState()+lowBits)&maxTableMask]
-
-			lowBits = uint16(bits >> (ofState.nbBits() & 31))
-			lowBits &= bitMask[mlState.nbBits()&15]
-			mlState = mlTable[(mlState.newState()+lowBits)&maxTableMask]
-
-			lowBits = uint16(bits) & bitMask[ofState.nbBits()&15]
-			ofState = ofTable[(ofState.newState()+lowBits)&maxTableMask]
-		}
-	}
-	s.seqSize += litRemain
-	if s.seqSize > maxBlockSize {
-		return fmt.Errorf("output (%d) bigger than max block size (%d)", s.seqSize, maxBlockSize)
-	}
-	err := br.close()
-	if err != nil {
-		printf("Closing sequences: %v, %+v\n", err, *br)
-	}
-	return err
-}
-
-// executeSimple handles cases when a dictionary is not used.
-func (s *sequenceDecs) executeSimple(seqs []seqVals, hist []byte) error {
-	// Ensure we have enough output size...
-	if len(s.out)+s.seqSize > cap(s.out) {
-		addBytes := s.seqSize + len(s.out)
-		s.out = append(s.out, make([]byte, addBytes)...)
-		s.out = s.out[:len(s.out)-addBytes]
-	}
-
-	if debugDecoder {
-		printf("Execute %d seqs with literals: %d into %d bytes\n", len(seqs), len(s.literals), s.seqSize)
-	}
-
-	var t = len(s.out)
-	out := s.out[:t+s.seqSize]
-
-	for _, seq := range seqs {
-		// Add literals
-		copy(out[t:], s.literals[:seq.ll])
-		t += seq.ll
-		s.literals = s.literals[seq.ll:]
-
-		// Malformed input
-		if seq.mo > t+len(hist) || seq.mo > s.windowSize {
-			return fmt.Errorf("match offset (%d) bigger than current history (%d)", seq.mo, t+len(hist))
-		}
-
-		// Copy from history.
-		if v := seq.mo - t; v > 0 {
-			// v is the start position in history from end.
-			start := len(hist) - v
-			if seq.ml > v {
-				// Some goes into the current block.
-				// Copy remainder of history
-				copy(out[t:], hist[start:])
-				t += v
-				seq.ml -= v
-			} else {
-				copy(out[t:], hist[start:start+seq.ml])
-				t += seq.ml
-				continue
-			}
-		}
-
-		// We must be in the current buffer now
-		if seq.ml > 0 {
-			start := t - seq.mo
-			if seq.ml <= t-start {
-				// No overlap
-				copy(out[t:], out[start:start+seq.ml])
-				t += seq.ml
-			} else {
-				// Overlapping copy
-				// Extend destination slice and copy one byte at the time.
-				src := out[start : start+seq.ml]
-				dst := out[t:]
-				dst = dst[:len(src)]
-				t += len(src)
-				// Destination is the space we just added.
-				for i := range src {
-					dst[i] = src[i]
-				}
-			}
-		}
-	}
-	// Add final literals
-	copy(out[t:], s.literals)
-	if debugDecoder {
-		t += len(s.literals)
-		if t != len(out) {
-			panic(fmt.Errorf("length mismatch, want %d, got %d, ss: %d", len(out), t, s.seqSize))
-		}
-	}
-	s.out = out
-
-	return nil
-}
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/zip.go b/backend/vendor/github.com/klauspost/compress/zstd/zip.go
index b53f606a..967f29b3 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/zip.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/zip.go
@@ -20,49 +20,34 @@ const ZipMethodPKWare = 20
 
 var zipReaderPool sync.Pool
 
-// newZipReader creates a pooled zip decompressor.
-func newZipReader(opts ...DOption) func(r io.Reader) io.ReadCloser {
-	pool := &zipReaderPool
-	if len(opts) > 0 {
-		opts = append([]DOption{WithDecoderLowmem(true), WithDecoderMaxWindow(128 << 20)}, opts...)
-		// Force concurrency 1
-		opts = append(opts, WithDecoderConcurrency(1))
-		// Create our own pool
-		pool = &sync.Pool{}
-	}
-	return func(r io.Reader) io.ReadCloser {
-		dec, ok := pool.Get().(*Decoder)
-		if ok {
-			dec.Reset(r)
-		} else {
-			d, err := NewReader(r, opts...)
-			if err != nil {
-				panic(err)
-			}
-			dec = d
+// newZipReader cannot be used since we would leak goroutines...
+func newZipReader(r io.Reader) io.ReadCloser {
+	dec, ok := zipReaderPool.Get().(*Decoder)
+	if ok {
+		dec.Reset(r)
+	} else {
+		d, err := NewReader(r, WithDecoderConcurrency(1), WithDecoderLowmem(true))
+		if err != nil {
+			panic(err)
 		}
-		return &pooledZipReader{dec: dec, pool: pool}
+		dec = d
 	}
+	return &pooledZipReader{dec: dec}
 }
 
 type pooledZipReader struct {
-	mu   sync.Mutex // guards Close and Read
-	pool *sync.Pool
-	dec  *Decoder
+	mu  sync.Mutex // guards Close and Read
+	dec *Decoder
 }
 
 func (r *pooledZipReader) Read(p []byte) (n int, err error) {
 	r.mu.Lock()
 	defer r.mu.Unlock()
 	if r.dec == nil {
-		return 0, errors.New("read after close or EOF")
+		return 0, errors.New("Read after Close")
 	}
 	dec, err := r.dec.Read(p)
-	if err == io.EOF {
-		r.dec.Reset(nil)
-		r.pool.Put(r.dec)
-		r.dec = nil
-	}
+
 	return dec, err
 }
 
@@ -72,7 +57,7 @@ func (r *pooledZipReader) Close() error {
 	var err error
 	if r.dec != nil {
 		err = r.dec.Reset(nil)
-		r.pool.Put(r.dec)
+		zipReaderPool.Put(r.dec)
 		r.dec = nil
 	}
 	return err
@@ -126,9 +111,12 @@ func ZipCompressor(opts ...EOption) func(w io.Writer) (io.WriteCloser, error) {
 
 // ZipDecompressor returns a decompressor that can be registered with zip libraries.
 // See ZipCompressor for example.
-// Options can be specified. WithDecoderConcurrency(1) is forced,
-// and by default a 128MB maximum decompression window is specified.
-// The window size can be overridden if required.
-func ZipDecompressor(opts ...DOption) func(r io.Reader) io.ReadCloser {
-	return newZipReader(opts...)
+func ZipDecompressor() func(r io.Reader) io.ReadCloser {
+	return func(r io.Reader) io.ReadCloser {
+		d, err := NewReader(r, WithDecoderConcurrency(1), WithDecoderLowmem(true))
+		if err != nil {
+			panic(err)
+		}
+		return d.IOReadCloser()
+	}
 }
diff --git a/backend/vendor/github.com/klauspost/compress/zstd/zstd.go b/backend/vendor/github.com/klauspost/compress/zstd/zstd.go
index c1c90b4a..0b0c2571 100644
--- a/backend/vendor/github.com/klauspost/compress/zstd/zstd.go
+++ b/backend/vendor/github.com/klauspost/compress/zstd/zstd.go
@@ -39,9 +39,6 @@ const zstdMinMatch = 3
 // Reset the buffer offset when reaching this.
 const bufferReset = math.MaxInt32 - MaxWindowSize
 
-// fcsUnknown is used for unknown frame content size.
-const fcsUnknown = math.MaxUint64
-
 var (
 	// ErrReservedBlockType is returned when a reserved block type is found.
 	// Typically this indicates wrong or corrupted input.
@@ -55,10 +52,6 @@ var (
 	// Typically returned on invalid input.
 	ErrBlockTooSmall = errors.New("block too small")
 
-	// ErrUnexpectedBlockSize is returned when a block has unexpected size.
-	// Typically returned on invalid input.
-	ErrUnexpectedBlockSize = errors.New("unexpected block size")
-
 	// ErrMagicMismatch is returned when a "magic" number isn't what is expected.
 	// Typically this indicates wrong or corrupted input.
 	ErrMagicMismatch = errors.New("invalid input: magic number mismatch")
diff --git a/backend/vendor/github.com/kyokomi/emoji/v2/emoji.go b/backend/vendor/github.com/kyokomi/emoji/v2/emoji.go
index 6913a2ea..245e2f0e 100644
--- a/backend/vendor/github.com/kyokomi/emoji/v2/emoji.go
+++ b/backend/vendor/github.com/kyokomi/emoji/v2/emoji.go
@@ -49,7 +49,8 @@ func NormalizeShortCode(shortCode string) string {
 // regular expression that matches :flag-[countrycode]:
 var flagRegexp = regexp.MustCompile(":flag-([a-z]{2}):")
 
-func emojize(x string) string {
+// Emojize Converts the string passed as an argument to a emoji. For unsupported emoji, the string passed as an argument is returned as is.
+func Emojize(x string) string {
 	str, ok := emojiCode()[x]
 	if ok {
 		return str + ReplacePadding
@@ -83,7 +84,7 @@ func replaseEmoji(input *bytes.Buffer) string {
 		case unicode.IsSpace(i):
 			return emoji.String()
 		case i == ':':
-			return emojize(emoji.String())
+			return Emojize(emoji.String())
 		}
 	}
 }
diff --git a/backend/vendor/github.com/microcosm-cc/bluemonday/policy.go b/backend/vendor/github.com/microcosm-cc/bluemonday/policy.go
index 1a5e00ce..c446fad0 100644
--- a/backend/vendor/github.com/microcosm-cc/bluemonday/policy.go
+++ b/backend/vendor/github.com/microcosm-cc/bluemonday/policy.go
@@ -879,6 +879,7 @@ func (p *Policy) addDefaultElementsWithoutAttrs() {
 	p.setOfElementsAllowedWithoutAttrs["optgroup"] = struct{}{}
 	p.setOfElementsAllowedWithoutAttrs["option"] = struct{}{}
 	p.setOfElementsAllowedWithoutAttrs["p"] = struct{}{}
+	p.setOfElementsAllowedWithoutAttrs["picture"] = struct{}{}
 	p.setOfElementsAllowedWithoutAttrs["pre"] = struct{}{}
 	p.setOfElementsAllowedWithoutAttrs["q"] = struct{}{}
 	p.setOfElementsAllowedWithoutAttrs["rp"] = struct{}{}
diff --git a/backend/vendor/github.com/stretchr/testify/assert/assertions.go b/backend/vendor/github.com/stretchr/testify/assert/assertions.go
index fa1245b1..2924cf3a 100644
--- a/backend/vendor/github.com/stretchr/testify/assert/assertions.go
+++ b/backend/vendor/github.com/stretchr/testify/assert/assertions.go
@@ -8,7 +8,6 @@ import (
 	"fmt"
 	"math"
 	"os"
-	"path/filepath"
 	"reflect"
 	"regexp"
 	"runtime"
@@ -141,12 +140,11 @@ func CallerInfo() []string {
 		}
 
 		parts := strings.Split(file, "/")
-		file = parts[len(parts)-1]
 		if len(parts) > 1 {
+			filename := parts[len(parts)-1]
 			dir := parts[len(parts)-2]
-			if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
-				path, _ := filepath.Abs(file)
-				callers = append(callers, fmt.Sprintf("%s:%d", path, line))
+			if (dir != "assert" && dir != "mock" && dir != "require") || filename == "mock_test.go" {
+				callers = append(callers, fmt.Sprintf("%s:%d", file, line))
 			}
 		}
 
@@ -530,7 +528,7 @@ func isNil(object interface{}) bool {
 		[]reflect.Kind{
 			reflect.Chan, reflect.Func,
 			reflect.Interface, reflect.Map,
-			reflect.Ptr, reflect.Slice},
+			reflect.Ptr, reflect.Slice, reflect.UnsafePointer},
 		kind)
 
 	if isNilableKind && value.IsNil() {
@@ -818,49 +816,44 @@ func Subset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok
 		return true // we consider nil to be equal to the nil set
 	}
 
-	defer func() {
-		if e := recover(); e != nil {
-			ok = false
-		}
-	}()
-
 	listKind := reflect.TypeOf(list).Kind()
-	subsetKind := reflect.TypeOf(subset).Kind()
-
 	if listKind != reflect.Array && listKind != reflect.Slice && listKind != reflect.Map {
 		return Fail(t, fmt.Sprintf("%q has an unsupported type %s", list, listKind), msgAndArgs...)
 	}
 
+	subsetKind := reflect.TypeOf(subset).Kind()
 	if subsetKind != reflect.Array && subsetKind != reflect.Slice && listKind != reflect.Map {
 		return Fail(t, fmt.Sprintf("%q has an unsupported type %s", subset, subsetKind), msgAndArgs...)
 	}
 
-	subsetValue := reflect.ValueOf(subset)
 	if subsetKind == reflect.Map && listKind == reflect.Map {
-		listValue := reflect.ValueOf(list)
-		subsetKeys := subsetValue.MapKeys()
+		subsetMap := reflect.ValueOf(subset)
+		actualMap := reflect.ValueOf(list)
 
-		for i := 0; i < len(subsetKeys); i++ {
-			subsetKey := subsetKeys[i]
-			subsetElement := subsetValue.MapIndex(subsetKey).Interface()
-			listElement := listValue.MapIndex(subsetKey).Interface()
+		for _, k := range subsetMap.MapKeys() {
+			ev := subsetMap.MapIndex(k)
+			av := actualMap.MapIndex(k)
 
-			if !ObjectsAreEqual(subsetElement, listElement) {
-				return Fail(t, fmt.Sprintf("\"%s\" does not contain \"%s\"", list, subsetElement), msgAndArgs...)
+			if !av.IsValid() {
+				return Fail(t, fmt.Sprintf("%#v does not contain %#v", list, subset), msgAndArgs...)
+			}
+			if !ObjectsAreEqual(ev.Interface(), av.Interface()) {
+				return Fail(t, fmt.Sprintf("%#v does not contain %#v", list, subset), msgAndArgs...)
 			}
 		}
 
 		return true
 	}
 
-	for i := 0; i < subsetValue.Len(); i++ {
-		element := subsetValue.Index(i).Interface()
+	subsetList := reflect.ValueOf(subset)
+	for i := 0; i < subsetList.Len(); i++ {
+		element := subsetList.Index(i).Interface()
 		ok, found := containsElement(list, element)
 		if !ok {
-			return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", list), msgAndArgs...)
+			return Fail(t, fmt.Sprintf("%#v could not be applied builtin len()", list), msgAndArgs...)
 		}
 		if !found {
-			return Fail(t, fmt.Sprintf("\"%s\" does not contain \"%s\"", list, element), msgAndArgs...)
+			return Fail(t, fmt.Sprintf("%#v does not contain %#v", list, element), msgAndArgs...)
 		}
 	}
 
@@ -879,34 +872,28 @@ func NotSubset(t TestingT, list, subset interface{}, msgAndArgs ...interface{})
 		return Fail(t, "nil is the empty set which is a subset of every set", msgAndArgs...)
 	}
 
-	defer func() {
-		if e := recover(); e != nil {
-			ok = false
-		}
-	}()
-
 	listKind := reflect.TypeOf(list).Kind()
-	subsetKind := reflect.TypeOf(subset).Kind()
-
 	if listKind != reflect.Array && listKind != reflect.Slice && listKind != reflect.Map {
 		return Fail(t, fmt.Sprintf("%q has an unsupported type %s", list, listKind), msgAndArgs...)
 	}
 
+	subsetKind := reflect.TypeOf(subset).Kind()
 	if subsetKind != reflect.Array && subsetKind != reflect.Slice && listKind != reflect.Map {
 		return Fail(t, fmt.Sprintf("%q has an unsupported type %s", subset, subsetKind), msgAndArgs...)
 	}
 
-	subsetValue := reflect.ValueOf(subset)
 	if subsetKind == reflect.Map && listKind == reflect.Map {
-		listValue := reflect.ValueOf(list)
-		subsetKeys := subsetValue.MapKeys()
+		subsetMap := reflect.ValueOf(subset)
+		actualMap := reflect.ValueOf(list)
 
-		for i := 0; i < len(subsetKeys); i++ {
-			subsetKey := subsetKeys[i]
-			subsetElement := subsetValue.MapIndex(subsetKey).Interface()
-			listElement := listValue.MapIndex(subsetKey).Interface()
+		for _, k := range subsetMap.MapKeys() {
+			ev := subsetMap.MapIndex(k)
+			av := actualMap.MapIndex(k)
 
-			if !ObjectsAreEqual(subsetElement, listElement) {
+			if !av.IsValid() {
+				return true
+			}
+			if !ObjectsAreEqual(ev.Interface(), av.Interface()) {
 				return true
 			}
 		}
@@ -914,8 +901,9 @@ func NotSubset(t TestingT, list, subset interface{}, msgAndArgs ...interface{})
 		return Fail(t, fmt.Sprintf("%q is a subset of %q", subset, list), msgAndArgs...)
 	}
 
-	for i := 0; i < subsetValue.Len(); i++ {
-		element := subsetValue.Index(i).Interface()
+	subsetList := reflect.ValueOf(subset)
+	for i := 0; i < subsetList.Len(); i++ {
+		element := subsetList.Index(i).Interface()
 		ok, found := containsElement(list, element)
 		if !ok {
 			return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", list), msgAndArgs...)
diff --git a/backend/vendor/github.com/youmark/pkcs8/.travis.yml b/backend/vendor/github.com/youmark/pkcs8/.travis.yml
index 3608f7dc..0bceef6f 100644
--- a/backend/vendor/github.com/youmark/pkcs8/.travis.yml
+++ b/backend/vendor/github.com/youmark/pkcs8/.travis.yml
@@ -1,13 +1,8 @@
-arch:
-    - amd64
-    - ppc64le
 language: go
 
 go:
+  - "1.9.x"
   - "1.10.x"
-  - "1.11.x"
-  - "1.12.x"
-  - "1.13.x"
   - master
 
 script:
diff --git a/backend/vendor/github.com/youmark/pkcs8/README.md b/backend/vendor/github.com/youmark/pkcs8/README.md
index ef6c7625..f2167dbf 100644
--- a/backend/vendor/github.com/youmark/pkcs8/README.md
+++ b/backend/vendor/github.com/youmark/pkcs8/README.md
@@ -8,15 +8,14 @@ pkcs8 package fills the gap here. It implements functions to process private key
 [**Godoc**](http://godoc.org/github.com/youmark/pkcs8)
 
 ## Installation
-Supports Go 1.10+. Release v1.1 is the last release supporting Go 1.9 
+Supports Go 1.9+
 
 ```text
 go get github.com/youmark/pkcs8
 ```
 ## dependency
-This package depends on golang.org/x/crypto/pbkdf2 and golang.org/x/crypto/scrypt packages. Use the following command to retrieve them
+This package depends on golang.org/x/crypto/pbkdf2 package. Use the following command to retrive pbkdf2 package
 ```text
 go get golang.org/x/crypto/pbkdf2
-go get golang.org/x/crypto/scrypt
 ```
 
diff --git a/backend/vendor/github.com/youmark/pkcs8/cipher.go b/backend/vendor/github.com/youmark/pkcs8/cipher.go
deleted file mode 100644
index 2946c93e..00000000
--- a/backend/vendor/github.com/youmark/pkcs8/cipher.go
+++ /dev/null
@@ -1,60 +0,0 @@
-package pkcs8
-
-import (
-	"bytes"
-	"crypto/cipher"
-	"encoding/asn1"
-)
-
-type cipherWithBlock struct {
-	oid      asn1.ObjectIdentifier
-	ivSize   int
-	keySize  int
-	newBlock func(key []byte) (cipher.Block, error)
-}
-
-func (c cipherWithBlock) IVSize() int {
-	return c.ivSize
-}
-
-func (c cipherWithBlock) KeySize() int {
-	return c.keySize
-}
-
-func (c cipherWithBlock) OID() asn1.ObjectIdentifier {
-	return c.oid
-}
-
-func (c cipherWithBlock) Encrypt(key, iv, plaintext []byte) ([]byte, error) {
-	block, err := c.newBlock(key)
-	if err != nil {
-		return nil, err
-	}
-	return cbcEncrypt(block, key, iv, plaintext)
-}
-
-func (c cipherWithBlock) Decrypt(key, iv, ciphertext []byte) ([]byte, error) {
-	block, err := c.newBlock(key)
-	if err != nil {
-		return nil, err
-	}
-	return cbcDecrypt(block, key, iv, ciphertext)
-}
-
-func cbcEncrypt(block cipher.Block, key, iv, plaintext []byte) ([]byte, error) {
-	mode := cipher.NewCBCEncrypter(block, iv)
-	paddingLen := block.BlockSize() - (len(plaintext) % block.BlockSize())
-	ciphertext := make([]byte, len(plaintext)+paddingLen)
-	copy(ciphertext, plaintext)
-	copy(ciphertext[len(plaintext):], bytes.Repeat([]byte{byte(paddingLen)}, paddingLen))
-	mode.CryptBlocks(ciphertext, ciphertext)
-	return ciphertext, nil
-}
-
-func cbcDecrypt(block cipher.Block, key, iv, ciphertext []byte) ([]byte, error) {
-	mode := cipher.NewCBCDecrypter(block, iv)
-	plaintext := make([]byte, len(ciphertext))
-	mode.CryptBlocks(plaintext, ciphertext)
-	// TODO: remove padding
-	return plaintext, nil
-}
diff --git a/backend/vendor/github.com/youmark/pkcs8/cipher_3des.go b/backend/vendor/github.com/youmark/pkcs8/cipher_3des.go
deleted file mode 100644
index 56296644..00000000
--- a/backend/vendor/github.com/youmark/pkcs8/cipher_3des.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package pkcs8
-
-import (
-	"crypto/des"
-	"encoding/asn1"
-)
-
-var (
-	oidDESEDE3CBC = asn1.ObjectIdentifier{1, 2, 840, 113549, 3, 7}
-)
-
-func init() {
-	RegisterCipher(oidDESEDE3CBC, func() Cipher {
-		return TripleDESCBC
-	})
-}
-
-// TripleDESCBC is the 168-bit key 3DES cipher in CBC mode.
-var TripleDESCBC = cipherWithBlock{
-	ivSize:   des.BlockSize,
-	keySize:  24,
-	newBlock: des.NewTripleDESCipher,
-	oid:      oidDESEDE3CBC,
-}
diff --git a/backend/vendor/github.com/youmark/pkcs8/cipher_aes.go b/backend/vendor/github.com/youmark/pkcs8/cipher_aes.go
deleted file mode 100644
index c0372d1e..00000000
--- a/backend/vendor/github.com/youmark/pkcs8/cipher_aes.go
+++ /dev/null
@@ -1,84 +0,0 @@
-package pkcs8
-
-import (
-	"crypto/aes"
-	"encoding/asn1"
-)
-
-var (
-	oidAES128CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 2}
-	oidAES128GCM = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 6}
-	oidAES192CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 22}
-	oidAES192GCM = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 26}
-	oidAES256CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 42}
-	oidAES256GCM = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 46}
-)
-
-func init() {
-	RegisterCipher(oidAES128CBC, func() Cipher {
-		return AES128CBC
-	})
-	RegisterCipher(oidAES128GCM, func() Cipher {
-		return AES128GCM
-	})
-	RegisterCipher(oidAES192CBC, func() Cipher {
-		return AES192CBC
-	})
-	RegisterCipher(oidAES192GCM, func() Cipher {
-		return AES192GCM
-	})
-	RegisterCipher(oidAES256CBC, func() Cipher {
-		return AES256CBC
-	})
-	RegisterCipher(oidAES256GCM, func() Cipher {
-		return AES256GCM
-	})
-}
-
-// AES128CBC is the 128-bit key AES cipher in CBC mode.
-var AES128CBC = cipherWithBlock{
-	ivSize:   aes.BlockSize,
-	keySize:  16,
-	newBlock: aes.NewCipher,
-	oid:      oidAES128CBC,
-}
-
-// AES128GCM is the 128-bit key AES cipher in GCM mode.
-var AES128GCM = cipherWithBlock{
-	ivSize:   aes.BlockSize,
-	keySize:  16,
-	newBlock: aes.NewCipher,
-	oid:      oidAES128GCM,
-}
-
-// AES192CBC is the 192-bit key AES cipher in CBC mode.
-var AES192CBC = cipherWithBlock{
-	ivSize:   aes.BlockSize,
-	keySize:  24,
-	newBlock: aes.NewCipher,
-	oid:      oidAES192CBC,
-}
-
-// AES192GCM is the 912-bit key AES cipher in GCM mode.
-var AES192GCM = cipherWithBlock{
-	ivSize:   aes.BlockSize,
-	keySize:  24,
-	newBlock: aes.NewCipher,
-	oid:      oidAES192GCM,
-}
-
-// AES256CBC is the 256-bit key AES cipher in CBC mode.
-var AES256CBC = cipherWithBlock{
-	ivSize:   aes.BlockSize,
-	keySize:  32,
-	newBlock: aes.NewCipher,
-	oid:      oidAES256CBC,
-}
-
-// AES256GCM is the 256-bit key AES cipher in GCM mode.
-var AES256GCM = cipherWithBlock{
-	ivSize:   aes.BlockSize,
-	keySize:  32,
-	newBlock: aes.NewCipher,
-	oid:      oidAES256GCM,
-}
diff --git a/backend/vendor/github.com/youmark/pkcs8/kdf_pbkdf2.go b/backend/vendor/github.com/youmark/pkcs8/kdf_pbkdf2.go
deleted file mode 100644
index 79697dd8..00000000
--- a/backend/vendor/github.com/youmark/pkcs8/kdf_pbkdf2.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package pkcs8
-
-import (
-	"crypto"
-	"crypto/sha1"
-	"crypto/sha256"
-	"crypto/x509/pkix"
-	"encoding/asn1"
-	"errors"
-	"hash"
-
-	"golang.org/x/crypto/pbkdf2"
-)
-
-var (
-	oidPKCS5PBKDF2        = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 12}
-	oidHMACWithSHA1       = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 7}
-	oidHMACWithSHA256     = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 9}
-)
-
-func init() {
-	RegisterKDF(oidPKCS5PBKDF2, func() KDFParameters {
-		return new(pbkdf2Params)
-	})
-}
-
-func newHashFromPRF(ai pkix.AlgorithmIdentifier) (func() hash.Hash, error) {
-	switch {
-	case len(ai.Algorithm) == 0 || ai.Algorithm.Equal(oidHMACWithSHA1):
-		return sha1.New, nil
-	case ai.Algorithm.Equal(oidHMACWithSHA256):
-		return sha256.New, nil
-	default:
-		return nil, errors.New("pkcs8: unsupported hash function")
-	}
-}
-
-func newPRFParamFromHash(h crypto.Hash) (pkix.AlgorithmIdentifier, error) {
-	switch h {
-	case crypto.SHA1:
-		return pkix.AlgorithmIdentifier{
-			Algorithm:  oidHMACWithSHA1,
-			Parameters: asn1.RawValue{Tag: asn1.TagNull}}, nil
-	case crypto.SHA256:
-		return pkix.AlgorithmIdentifier{
-			Algorithm:  oidHMACWithSHA256,
-			Parameters: asn1.RawValue{Tag: asn1.TagNull}}, nil
-	}
-	return pkix.AlgorithmIdentifier{}, errors.New("pkcs8: unsupported hash function")
-}
-
-type pbkdf2Params struct {
-	Salt           []byte
-	IterationCount int
-	PRF            pkix.AlgorithmIdentifier `asn1:"optional"`
-}
-
-func (p pbkdf2Params) DeriveKey(password []byte, size int) (key []byte, err error) {
-	h, err := newHashFromPRF(p.PRF)
-	if err != nil {
-		return nil, err
-	}
-	return pbkdf2.Key(password, p.Salt, p.IterationCount, size, h), nil
-}
-
-// PBKDF2Opts contains options for the PBKDF2 key derivation function.
-type PBKDF2Opts struct {
-	SaltSize       int
-	IterationCount int
-	HMACHash       crypto.Hash
-}
-
-func (p PBKDF2Opts) DeriveKey(password, salt []byte, size int) (
-	key []byte, params KDFParameters, err error) {
-
-	key = pbkdf2.Key(password, salt, p.IterationCount, size, p.HMACHash.New)
-	prfParam, err := newPRFParamFromHash(p.HMACHash)
-	if err != nil {
-		return nil, nil, err
-	}
-	params = pbkdf2Params{salt, p.IterationCount, prfParam}
-	return key, params, nil
-}
-
-func (p PBKDF2Opts) GetSaltSize() int {
-	return p.SaltSize
-}
-
-func (p PBKDF2Opts) OID() asn1.ObjectIdentifier {
-	return oidPKCS5PBKDF2
-}
diff --git a/backend/vendor/github.com/youmark/pkcs8/kdf_scrypt.go b/backend/vendor/github.com/youmark/pkcs8/kdf_scrypt.go
deleted file mode 100644
index 36c4f4f5..00000000
--- a/backend/vendor/github.com/youmark/pkcs8/kdf_scrypt.go
+++ /dev/null
@@ -1,62 +0,0 @@
-package pkcs8
-
-import (
-	"encoding/asn1"
-
-	"golang.org/x/crypto/scrypt"
-)
-
-var (
-	oidScrypt = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11591, 4, 11}
-)
-
-func init() {
-	RegisterKDF(oidScrypt, func() KDFParameters {
-		return new(scryptParams)
-	})
-}
-
-type scryptParams struct {
-	Salt                     []byte
-	CostParameter            int
-	BlockSize                int
-	ParallelizationParameter int
-}
-
-func (p scryptParams) DeriveKey(password []byte, size int) (key []byte, err error) {
-	return scrypt.Key(password, p.Salt, p.CostParameter, p.BlockSize,
-		p.ParallelizationParameter, size)
-}
-
-// ScryptOpts contains options for the scrypt key derivation function.
-type ScryptOpts struct {
-	SaltSize                 int
-	CostParameter            int
-	BlockSize                int
-	ParallelizationParameter int
-}
-
-func (p ScryptOpts) DeriveKey(password, salt []byte, size int) (
-	key []byte, params KDFParameters, err error) {
-
-	key, err = scrypt.Key(password, salt, p.CostParameter, p.BlockSize,
-		p.ParallelizationParameter, size)
-	if err != nil {
-		return nil, nil, err
-	}
-	params = scryptParams{
-		BlockSize:                p.BlockSize,
-		CostParameter:            p.CostParameter,
-		ParallelizationParameter: p.ParallelizationParameter,
-		Salt:                     salt,
-	}
-	return key, params, nil
-}
-
-func (p ScryptOpts) GetSaltSize() int {
-	return p.SaltSize
-}
-
-func (p ScryptOpts) OID() asn1.ObjectIdentifier {
-	return oidScrypt
-}
diff --git a/backend/vendor/github.com/youmark/pkcs8/pkcs8.go b/backend/vendor/github.com/youmark/pkcs8/pkcs8.go
index f27f6275..9270a797 100644
--- a/backend/vendor/github.com/youmark/pkcs8/pkcs8.go
+++ b/backend/vendor/github.com/youmark/pkcs8/pkcs8.go
@@ -2,275 +2,116 @@
 package pkcs8
 
 import (
-	"crypto"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/des"
 	"crypto/ecdsa"
+	"crypto/elliptic"
 	"crypto/rand"
 	"crypto/rsa"
+	"crypto/sha1"
+	"crypto/sha256"
 	"crypto/x509"
-	"crypto/x509/pkix"
 	"encoding/asn1"
 	"errors"
-	"fmt"
+
+	"golang.org/x/crypto/pbkdf2"
 )
 
-// DefaultOpts are the default options for encrypting a key if none are given.
-// The defaults can be changed by the library user.
-var DefaultOpts = &Opts{
-	Cipher: AES256CBC,
-	KDFOpts: PBKDF2Opts{
-		SaltSize:       8,
-		IterationCount: 10000,
-		HMACHash:       crypto.SHA256,
-	},
-}
+// Copy from crypto/x509
+var (
+	oidPublicKeyRSA   = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}
+	oidPublicKeyDSA   = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 1}
+	oidPublicKeyECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
+)
 
-// KDFOpts contains options for a key derivation function.
-// An implementation of this interface must be specified when encrypting a PKCS#8 key.
-type KDFOpts interface {
-	// DeriveKey derives a key of size bytes from the given password and salt.
-	// It returns the key and the ASN.1-encodable parameters used.
-	DeriveKey(password, salt []byte, size int) (key []byte, params KDFParameters, err error)
-	// GetSaltSize returns the salt size specified.
-	GetSaltSize() int
-	// OID returns the OID of the KDF specified.
-	OID() asn1.ObjectIdentifier
-}
+// Copy from crypto/x509
+var (
+	oidNamedCurveP224 = asn1.ObjectIdentifier{1, 3, 132, 0, 33}
+	oidNamedCurveP256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 3, 1, 7}
+	oidNamedCurveP384 = asn1.ObjectIdentifier{1, 3, 132, 0, 34}
+	oidNamedCurveP521 = asn1.ObjectIdentifier{1, 3, 132, 0, 35}
+)
 
-// KDFParameters contains parameters (salt, etc.) for a key deriviation function.
-// It must be a ASN.1-decodable structure.
-// An implementation of this interface is created when decoding an encrypted PKCS#8 key.
-type KDFParameters interface {
-	// DeriveKey derives a key of size bytes from the given password.
-	// It uses the salt from the decoded parameters.
-	DeriveKey(password []byte, size int) (key []byte, err error)
-}
+// Copy from crypto/x509
+func oidFromNamedCurve(curve elliptic.Curve) (asn1.ObjectIdentifier, bool) {
+	switch curve {
+	case elliptic.P224():
+		return oidNamedCurveP224, true
+	case elliptic.P256():
+		return oidNamedCurveP256, true
+	case elliptic.P384():
+		return oidNamedCurveP384, true
+	case elliptic.P521():
+		return oidNamedCurveP521, true
+	}
 
-var kdfs = make(map[string]func() KDFParameters)
-
-// RegisterKDF registers a function that returns a new instance of the given KDF
-// parameters. This allows the library to support client-provided KDFs.
-func RegisterKDF(oid asn1.ObjectIdentifier, params func() KDFParameters) {
-	kdfs[oid.String()] = params
-}
-
-// Cipher represents a cipher for encrypting the key material.
-type Cipher interface {
-	// IVSize returns the IV size of the cipher, in bytes.
-	IVSize() int
-	// KeySize returns the key size of the cipher, in bytes.
-	KeySize() int
-	// Encrypt encrypts the key material.
-	Encrypt(key, iv, plaintext []byte) ([]byte, error)
-	// Decrypt decrypts the key material.
-	Decrypt(key, iv, ciphertext []byte) ([]byte, error)
-	// OID returns the OID of the cipher specified.
-	OID() asn1.ObjectIdentifier
-}
-
-var ciphers = make(map[string]func() Cipher)
-
-// RegisterCipher registers a function that returns a new instance of the given
-// cipher. This allows the library to support client-provided ciphers.
-func RegisterCipher(oid asn1.ObjectIdentifier, cipher func() Cipher) {
-	ciphers[oid.String()] = cipher
-}
-
-// Opts contains options for encrypting a PKCS#8 key.
-type Opts struct {
-	Cipher  Cipher
-	KDFOpts KDFOpts
+	return nil, false
 }
 
 // Unecrypted PKCS8
 var (
-	oidPBES2 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 13}
+	oidPKCS5PBKDF2    = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 12}
+	oidPBES2          = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 13}
+	oidAES256CBC      = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 42}
+	oidAES128CBC      = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 2}
+	oidHMACWithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 9}
+	oidDESEDE3CBC     = asn1.ObjectIdentifier{1, 2, 840, 113549, 3, 7}
 )
 
-type encryptedPrivateKeyInfo struct {
-	EncryptionAlgorithm pkix.AlgorithmIdentifier
-	EncryptedData       []byte
-}
-
-type pbes2Params struct {
-	KeyDerivationFunc pkix.AlgorithmIdentifier
-	EncryptionScheme  pkix.AlgorithmIdentifier
+type ecPrivateKey struct {
+	Version       int
+	PrivateKey    []byte
+	NamedCurveOID asn1.ObjectIdentifier `asn1:"optional,explicit,tag:0"`
+	PublicKey     asn1.BitString        `asn1:"optional,explicit,tag:1"`
 }
 
 type privateKeyInfo struct {
 	Version             int
-	PrivateKeyAlgorithm pkix.AlgorithmIdentifier
+	PrivateKeyAlgorithm []asn1.ObjectIdentifier
 	PrivateKey          []byte
 }
 
-func parseKeyDerivationFunc(keyDerivationFunc pkix.AlgorithmIdentifier) (KDFParameters, error) {
-	oid := keyDerivationFunc.Algorithm.String()
-	newParams, ok := kdfs[oid]
-	if !ok {
-		return nil, fmt.Errorf("pkcs8: unsupported KDF (OID: %s)", oid)
-	}
-	params := newParams()
-	_, err := asn1.Unmarshal(keyDerivationFunc.Parameters.FullBytes, params)
-	if err != nil {
-		return nil, errors.New("pkcs8: invalid KDF parameters")
-	}
-	return params, nil
+// Encrypted PKCS8
+type prfParam struct {
+	IdPRF     asn1.ObjectIdentifier
+	NullParam asn1.RawValue
 }
 
-func parseEncryptionScheme(encryptionScheme pkix.AlgorithmIdentifier) (Cipher, []byte, error) {
-	oid := encryptionScheme.Algorithm.String()
-	newCipher, ok := ciphers[oid]
-	if !ok {
-		return nil, nil, fmt.Errorf("pkcs8: unsupported cipher (OID: %s)", oid)
-	}
-	cipher := newCipher()
-	var iv []byte
-	if _, err := asn1.Unmarshal(encryptionScheme.Parameters.FullBytes, &iv); err != nil {
-		return nil, nil, errors.New("pkcs8: invalid cipher parameters")
-	}
-	return cipher, iv, nil
+type pbkdf2Params struct {
+	Salt           []byte
+	IterationCount int
+	PrfParam       prfParam `asn1:"optional"`
 }
 
-// ParsePrivateKey parses a DER-encoded PKCS#8 private key.
-// Password can be nil.
-// This is equivalent to ParsePKCS8PrivateKey.
-func ParsePrivateKey(der []byte, password []byte) (interface{}, KDFParameters, error) {
-	// No password provided, assume the private key is unencrypted
-	if len(password) == 0 {
-		privateKey, err := x509.ParsePKCS8PrivateKey(der)
-		return privateKey, nil, err
-	}
-
-	// Use the password provided to decrypt the private key
-	var privKey encryptedPrivateKeyInfo
-	if _, err := asn1.Unmarshal(der, &privKey); err != nil {
-		return nil, nil, errors.New("pkcs8: only PKCS #5 v2.0 supported")
-	}
-
-	if !privKey.EncryptionAlgorithm.Algorithm.Equal(oidPBES2) {
-		return nil, nil, errors.New("pkcs8: only PBES2 supported")
-	}
-
-	var params pbes2Params
-	if _, err := asn1.Unmarshal(privKey.EncryptionAlgorithm.Parameters.FullBytes, ¶ms); err != nil {
-		return nil, nil, errors.New("pkcs8: invalid PBES2 parameters")
-	}
-
-	cipher, iv, err := parseEncryptionScheme(params.EncryptionScheme)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	kdfParams, err := parseKeyDerivationFunc(params.KeyDerivationFunc)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	keySize := cipher.KeySize()
-	symkey, err := kdfParams.DeriveKey(password, keySize)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	encryptedKey := privKey.EncryptedData
-	decryptedKey, err := cipher.Decrypt(symkey, iv, encryptedKey)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	key, err := x509.ParsePKCS8PrivateKey(decryptedKey)
-	if err != nil {
-		return nil, nil, errors.New("pkcs8: incorrect password")
-	}
-	return key, kdfParams, nil
+type pbkdf2Algorithms struct {
+	IdPBKDF2     asn1.ObjectIdentifier
+	PBKDF2Params pbkdf2Params
 }
 
-// MarshalPrivateKey encodes a private key into DER-encoded PKCS#8 with the given options.
-// Password can be nil.
-func MarshalPrivateKey(priv interface{}, password []byte, opts *Opts) ([]byte, error) {
-	if len(password) == 0 {
-		return x509.MarshalPKCS8PrivateKey(priv)
-	}
-
-	if opts == nil {
-		opts = DefaultOpts
-	}
-
-	// Convert private key into PKCS8 format
-	pkey, err := x509.MarshalPKCS8PrivateKey(priv)
-	if err != nil {
-		return nil, err
-	}
-
-	encAlg := opts.Cipher
-	salt := make([]byte, opts.KDFOpts.GetSaltSize())
-	_, err = rand.Read(salt)
-	if err != nil {
-		return nil, err
-	}
-	iv := make([]byte, encAlg.IVSize())
-	_, err = rand.Read(iv)
-	if err != nil {
-		return nil, err
-	}
-	key, kdfParams, err := opts.KDFOpts.DeriveKey(password, salt, encAlg.KeySize())
-	if err != nil {
-		return nil, err
-	}
-
-	encryptedKey, err := encAlg.Encrypt(key, iv, pkey)
-	if err != nil {
-		return nil, err
-	}
-
-	marshalledParams, err := asn1.Marshal(kdfParams)
-	if err != nil {
-		return nil, err
-	}
-	keyDerivationFunc := pkix.AlgorithmIdentifier{
-		Algorithm:  opts.KDFOpts.OID(),
-		Parameters: asn1.RawValue{FullBytes: marshalledParams},
-	}
-	marshalledIV, err := asn1.Marshal(iv)
-	if err != nil {
-		return nil, err
-	}
-	encryptionScheme := pkix.AlgorithmIdentifier{
-		Algorithm:  encAlg.OID(),
-		Parameters: asn1.RawValue{FullBytes: marshalledIV},
-	}
-
-	encryptionAlgorithmParams := pbes2Params{
-		EncryptionScheme:  encryptionScheme,
-		KeyDerivationFunc: keyDerivationFunc,
-	}
-	marshalledEncryptionAlgorithmParams, err := asn1.Marshal(encryptionAlgorithmParams)
-	if err != nil {
-		return nil, err
-	}
-	encryptionAlgorithm := pkix.AlgorithmIdentifier{
-		Algorithm:  oidPBES2,
-		Parameters: asn1.RawValue{FullBytes: marshalledEncryptionAlgorithmParams},
-	}
-
-	encryptedPkey := encryptedPrivateKeyInfo{
-		EncryptionAlgorithm: encryptionAlgorithm,
-		EncryptedData:       encryptedKey,
-	}
-
-	return asn1.Marshal(encryptedPkey)
+type pbkdf2Encs struct {
+	EncryAlgo asn1.ObjectIdentifier
+	IV        []byte
 }
 
-// ParsePKCS8PrivateKey parses encrypted/unencrypted private keys in PKCS#8 format. To parse encrypted private keys, a password of []byte type should be provided to the function as the second parameter.
-func ParsePKCS8PrivateKey(der []byte, v ...[]byte) (interface{}, error) {
-	var password []byte
-	if len(v) > 0 {
-		password = v[0]
-	}
-	privateKey, _, err := ParsePrivateKey(der, password)
-	return privateKey, err
+type pbes2Params struct {
+	KeyDerivationFunc pbkdf2Algorithms
+	EncryptionScheme  pbkdf2Encs
+}
+
+type pbes2Algorithms struct {
+	IdPBES2     asn1.ObjectIdentifier
+	PBES2Params pbes2Params
+}
+
+type encryptedPrivateKeyInfo struct {
+	EncryptionAlgorithm pbes2Algorithms
+	EncryptedData       []byte
 }
 
 // ParsePKCS8PrivateKeyRSA parses encrypted/unencrypted private keys in PKCS#8 format. To parse encrypted private keys, a password of []byte type should be provided to the function as the second parameter.
+//
+// The function can decrypt the private key encrypted with AES-256-CBC mode, and stored in PKCS #5 v2.0 format.
 func ParsePKCS8PrivateKeyRSA(der []byte, v ...[]byte) (*rsa.PrivateKey, error) {
 	key, err := ParsePKCS8PrivateKey(der, v...)
 	if err != nil {
@@ -284,6 +125,8 @@ func ParsePKCS8PrivateKeyRSA(der []byte, v ...[]byte) (*rsa.PrivateKey, error) {
 }
 
 // ParsePKCS8PrivateKeyECDSA parses encrypted/unencrypted private keys in PKCS#8 format. To parse encrypted private keys, a password of []byte type should be provided to the function as the second parameter.
+//
+// The function can decrypt the private key encrypted with AES-256-CBC mode, and stored in PKCS #5 v2.0 format.
 func ParsePKCS8PrivateKeyECDSA(der []byte, v ...[]byte) (*ecdsa.PrivateKey, error) {
 	key, err := ParsePKCS8PrivateKey(der, v...)
 	if err != nil {
@@ -296,14 +139,167 @@ func ParsePKCS8PrivateKeyECDSA(der []byte, v ...[]byte) (*ecdsa.PrivateKey, erro
 	return typedKey, nil
 }
 
+// ParsePKCS8PrivateKey parses encrypted/unencrypted private keys in PKCS#8 format. To parse encrypted private keys, a password of []byte type should be provided to the function as the second parameter.
+//
+// The function can decrypt the private key encrypted with AES-256-CBC mode, and stored in PKCS #5 v2.0 format.
+func ParsePKCS8PrivateKey(der []byte, v ...[]byte) (interface{}, error) {
+	// No password provided, assume the private key is unencrypted
+	if v == nil {
+		return x509.ParsePKCS8PrivateKey(der)
+	}
+
+	// Use the password provided to decrypt the private key
+	password := v[0]
+	var privKey encryptedPrivateKeyInfo
+	if _, err := asn1.Unmarshal(der, &privKey); err != nil {
+		return nil, errors.New("pkcs8: only PKCS #5 v2.0 supported")
+	}
+
+	if !privKey.EncryptionAlgorithm.IdPBES2.Equal(oidPBES2) {
+		return nil, errors.New("pkcs8: only PBES2 supported")
+	}
+
+	if !privKey.EncryptionAlgorithm.PBES2Params.KeyDerivationFunc.IdPBKDF2.Equal(oidPKCS5PBKDF2) {
+		return nil, errors.New("pkcs8: only PBKDF2 supported")
+	}
+
+	encParam := privKey.EncryptionAlgorithm.PBES2Params.EncryptionScheme
+	kdfParam := privKey.EncryptionAlgorithm.PBES2Params.KeyDerivationFunc.PBKDF2Params
+
+	iv := encParam.IV
+	salt := kdfParam.Salt
+	iter := kdfParam.IterationCount
+	keyHash := sha1.New
+	if kdfParam.PrfParam.IdPRF.Equal(oidHMACWithSHA256) {
+		keyHash = sha256.New
+	}
+
+	encryptedKey := privKey.EncryptedData
+	var symkey []byte
+	var block cipher.Block
+	var err error
+	switch {
+	case encParam.EncryAlgo.Equal(oidAES128CBC):
+		symkey = pbkdf2.Key(password, salt, iter, 16, keyHash)
+		block, err = aes.NewCipher(symkey)
+	case encParam.EncryAlgo.Equal(oidAES256CBC):
+		symkey = pbkdf2.Key(password, salt, iter, 32, keyHash)
+		block, err = aes.NewCipher(symkey)
+	case encParam.EncryAlgo.Equal(oidDESEDE3CBC):
+		symkey = pbkdf2.Key(password, salt, iter, 24, keyHash)
+		block, err = des.NewTripleDESCipher(symkey)
+	default:
+		return nil, errors.New("pkcs8: only AES-256-CBC, AES-128-CBC and DES-EDE3-CBC are supported")
+	}
+	if err != nil {
+		return nil, err
+	}
+	mode := cipher.NewCBCDecrypter(block, iv)
+	mode.CryptBlocks(encryptedKey, encryptedKey)
+
+	key, err := x509.ParsePKCS8PrivateKey(encryptedKey)
+	if err != nil {
+		return nil, errors.New("pkcs8: incorrect password")
+	}
+	return key, nil
+}
+
+func convertPrivateKeyToPKCS8(priv interface{}) ([]byte, error) {
+	var pkey privateKeyInfo
+
+	switch priv := priv.(type) {
+	case *ecdsa.PrivateKey:
+		eckey, err := x509.MarshalECPrivateKey(priv)
+		if err != nil {
+			return nil, err
+		}
+
+		oidNamedCurve, ok := oidFromNamedCurve(priv.Curve)
+		if !ok {
+			return nil, errors.New("pkcs8: unknown elliptic curve")
+		}
+
+		// Per RFC5958, if publicKey is present, then version is set to v2(1) else version is set to v1(0).
+		// But openssl set to v1 even publicKey is present
+		pkey.Version = 1
+		pkey.PrivateKeyAlgorithm = make([]asn1.ObjectIdentifier, 2)
+		pkey.PrivateKeyAlgorithm[0] = oidPublicKeyECDSA
+		pkey.PrivateKeyAlgorithm[1] = oidNamedCurve
+		pkey.PrivateKey = eckey
+	case *rsa.PrivateKey:
+
+		// Per RFC5958, if publicKey is present, then version is set to v2(1) else version is set to v1(0).
+		// But openssl set to v1 even publicKey is present
+		pkey.Version = 0
+		pkey.PrivateKeyAlgorithm = make([]asn1.ObjectIdentifier, 1)
+		pkey.PrivateKeyAlgorithm[0] = oidPublicKeyRSA
+		pkey.PrivateKey = x509.MarshalPKCS1PrivateKey(priv)
+	}
+
+	return asn1.Marshal(pkey)
+}
+
+func convertPrivateKeyToPKCS8Encrypted(priv interface{}, password []byte) ([]byte, error) {
+	// Convert private key into PKCS8 format
+	pkey, err := convertPrivateKeyToPKCS8(priv)
+	if err != nil {
+		return nil, err
+	}
+
+	// Calculate key from password based on PKCS5 algorithm
+	// Use 8 byte salt, 16 byte IV, and 2048 iteration
+	iter := 2048
+	salt := make([]byte, 8)
+	iv := make([]byte, 16)
+	_, err = rand.Read(salt)
+	if err != nil {
+		return nil, err
+	}
+	_, err = rand.Read(iv)
+	if err != nil {
+		return nil, err
+	}
+
+	key := pbkdf2.Key(password, salt, iter, 32, sha256.New)
+
+	// Use AES256-CBC mode, pad plaintext with PKCS5 padding scheme
+	padding := aes.BlockSize - len(pkey)%aes.BlockSize
+	if padding > 0 {
+		n := len(pkey)
+		pkey = append(pkey, make([]byte, padding)...)
+		for i := 0; i < padding; i++ {
+			pkey[n+i] = byte(padding)
+		}
+	}
+
+	encryptedKey := make([]byte, len(pkey))
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	mode := cipher.NewCBCEncrypter(block, iv)
+	mode.CryptBlocks(encryptedKey, pkey)
+
+	//	pbkdf2algo := pbkdf2Algorithms{oidPKCS5PBKDF2, pbkdf2Params{salt, iter, prfParam{oidHMACWithSHA256}}}
+
+	pbkdf2algo := pbkdf2Algorithms{oidPKCS5PBKDF2, pbkdf2Params{salt, iter, prfParam{oidHMACWithSHA256, asn1.RawValue{Tag: asn1.TagNull}}}}
+	pbkdf2encs := pbkdf2Encs{oidAES256CBC, iv}
+	pbes2algo := pbes2Algorithms{oidPBES2, pbes2Params{pbkdf2algo, pbkdf2encs}}
+
+	encryptedPkey := encryptedPrivateKeyInfo{pbes2algo, encryptedKey}
+
+	return asn1.Marshal(encryptedPkey)
+}
+
 // ConvertPrivateKeyToPKCS8 converts the private key into PKCS#8 format.
 // To encrypt the private key, the password of []byte type should be provided as the second parameter.
 //
-// The only supported key types are RSA and ECDSA (*rsa.PrivateKey or *ecdsa.PrivateKey for priv)
+// The only supported key types are RSA and ECDSA (*rsa.PublicKey or *ecdsa.PublicKey for priv)
 func ConvertPrivateKeyToPKCS8(priv interface{}, v ...[]byte) ([]byte, error) {
-	var password []byte
-	if len(v) > 0 {
-		password = v[0]
+	if v == nil {
+		return convertPrivateKeyToPKCS8(priv)
 	}
-	return MarshalPrivateKey(priv, password, nil)
+
+	password := string(v[0])
+	return convertPrivateKeyToPKCS8Encrypted(priv, []byte(password))
 }
diff --git a/backend/vendor/go.etcd.io/bbolt/.gitignore b/backend/vendor/go.etcd.io/bbolt/.gitignore
index 18312f00..9fa948eb 100644
--- a/backend/vendor/go.etcd.io/bbolt/.gitignore
+++ b/backend/vendor/go.etcd.io/bbolt/.gitignore
@@ -3,5 +3,8 @@
 *.swp
 /bin/
 cover.out
+cover-*.out
 /.idea
 *.iml
+/cmd/bbolt/bbolt
+
diff --git a/backend/vendor/go.etcd.io/bbolt/.travis.yml b/backend/vendor/go.etcd.io/bbolt/.travis.yml
deleted file mode 100644
index 452601e4..00000000
--- a/backend/vendor/go.etcd.io/bbolt/.travis.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-language: go
-go_import_path: go.etcd.io/bbolt
-
-sudo: false
-
-go:
-- 1.15
-
-before_install:
-- go get -v golang.org/x/sys/unix
-- go get -v honnef.co/go/tools/...
-- go get -v github.com/kisielk/errcheck
-
-script:
-- make fmt
-- make test
-- make race
-# - make errcheck
diff --git a/backend/vendor/go.etcd.io/bbolt/Makefile b/backend/vendor/go.etcd.io/bbolt/Makefile
index 21ecf48f..18154c63 100644
--- a/backend/vendor/go.etcd.io/bbolt/Makefile
+++ b/backend/vendor/go.etcd.io/bbolt/Makefile
@@ -2,35 +2,62 @@ BRANCH=`git rev-parse --abbrev-ref HEAD`
 COMMIT=`git rev-parse --short HEAD`
 GOLDFLAGS="-X main.branch $(BRANCH) -X main.commit $(COMMIT)"
 
-race:
-	@TEST_FREELIST_TYPE=hashmap go test -v -race -test.run="TestSimulate_(100op|1000op)"
-	@echo "array freelist test"
-	@TEST_FREELIST_TYPE=array go test -v -race -test.run="TestSimulate_(100op|1000op)"
+TESTFLAGS_RACE=-race=false
+ifdef ENABLE_RACE
+	TESTFLAGS_RACE=-race=true
+endif
 
+TESTFLAGS_CPU=
+ifdef CPU
+	TESTFLAGS_CPU=-cpu=$(CPU)
+endif
+TESTFLAGS = $(TESTFLAGS_RACE) $(TESTFLAGS_CPU) $(EXTRA_TESTFLAGS)
+
+.PHONY: fmt
 fmt:
 	!(gofmt -l -s -d $(shell find . -name \*.go) | grep '[a-z]')
 
-# go get honnef.co/go/tools/simple
-gosimple:
-	gosimple ./...
-
-# go get honnef.co/go/tools/unused
-unused:
-	unused ./...
-
-# go get github.com/kisielk/errcheck
-errcheck:
-	@errcheck -ignorepkg=bytes -ignore=os:Remove go.etcd.io/bbolt
+.PHONY: lint
+lint:
+	golangci-lint run ./...
 
+.PHONY: test
 test:
-	TEST_FREELIST_TYPE=hashmap go test -timeout 20m -v -coverprofile cover.out -covermode atomic
-	# Note: gets "program not an importable package" in out of path builds
-	TEST_FREELIST_TYPE=hashmap go test -v ./cmd/bbolt
+	@echo "hashmap freelist test"
+	TEST_FREELIST_TYPE=hashmap go test -v ${TESTFLAGS} -timeout 30m
+	TEST_FREELIST_TYPE=hashmap go test -v ${TESTFLAGS} ./cmd/bbolt
 
 	@echo "array freelist test"
+	TEST_FREELIST_TYPE=array go test -v ${TESTFLAGS} -timeout 30m
+	TEST_FREELIST_TYPE=array go test -v ${TESTFLAGS} ./cmd/bbolt
 
-	@TEST_FREELIST_TYPE=array go test -timeout 20m -v -coverprofile cover.out -covermode atomic
-	# Note: gets "program not an importable package" in out of path builds
-	@TEST_FREELIST_TYPE=array go test -v ./cmd/bbolt
+.PHONY: coverage
+coverage:
+	@echo "hashmap freelist test"
+	TEST_FREELIST_TYPE=hashmap go test -v -timeout 30m \
+		-coverprofile cover-freelist-hashmap.out -covermode atomic
+
+	@echo "array freelist test"
+	TEST_FREELIST_TYPE=array go test -v -timeout 30m \
+		-coverprofile cover-freelist-array.out -covermode atomic
+
+.PHONY: gofail-enable
+gofail-enable: install-gofail
+	gofail enable .
+
+.PHONY: gofail-disable
+gofail-disable:
+	gofail disable .
+
+.PHONY: install-gofail
+install-gofail:
+	go install go.etcd.io/gofail
+
+.PHONY: test-failpoint
+test-failpoint:
+	@echo "[failpoint] hashmap freelist test"
+	TEST_FREELIST_TYPE=hashmap go test -v ${TESTFLAGS} -timeout 30m ./tests/failpoint
+
+	@echo "[failpoint] array freelist test"
+	TEST_FREELIST_TYPE=array go test -v ${TESTFLAGS} -timeout 30m ./tests/failpoint
 
-.PHONY: race fmt errcheck test gosimple unused
diff --git a/backend/vendor/go.etcd.io/bbolt/README.md b/backend/vendor/go.etcd.io/bbolt/README.md
index f1b4a7b2..2be669a6 100644
--- a/backend/vendor/go.etcd.io/bbolt/README.md
+++ b/backend/vendor/go.etcd.io/bbolt/README.md
@@ -26,7 +26,7 @@ and setting values. That's it.
 [gh_ben]: https://github.com/benbjohnson
 [bolt]: https://github.com/boltdb/bolt
 [hyc_symas]: https://twitter.com/hyc_symas
-[lmdb]: http://symas.com/mdb/
+[lmdb]: https://www.symas.com/symas-embedded-database-lmdb
 
 ## Project Status
 
@@ -78,14 +78,23 @@ New minor versions may add additional features to the API.
 ### Installing
 
 To start using Bolt, install Go and run `go get`:
-
 ```sh
-$ go get go.etcd.io/bbolt/...
+$ go get go.etcd.io/bbolt@latest
 ```
 
-This will retrieve the library and install the `bolt` command line utility into
-your `$GOBIN` path.
+This will retrieve the library and update your `go.mod` and `go.sum` files.
 
+To run the command line utility, execute:
+```sh
+$ go run go.etcd.io/bbolt/cmd/bbolt@latest
+```
+
+Run `go install` to install the `bbolt` command line utility into
+your `$GOBIN` path, which defaults to `$GOPATH/bin` or `$HOME/go/bin` if the
+`GOPATH` environment variable is not set.
+```sh
+$ go install go.etcd.io/bbolt/cmd/bbolt@latest
+```
 
 ### Importing bbolt
 
@@ -933,7 +942,7 @@ Below is a list of public, open source projects that use Bolt:
 * [ipxed](https://github.com/kelseyhightower/ipxed) - Web interface and api for ipxed.
 * [Ironsmith](https://github.com/timshannon/ironsmith) - A simple, script-driven continuous integration (build - > test -> release) tool, with no external dependencies
 * [Kala](https://github.com/ajvb/kala) - Kala is a modern job scheduler optimized to run on a single node. It is persistent, JSON over HTTP API, ISO 8601 duration notation, and dependent jobs.
-* [Key Value Access Langusge (KVAL)](https://github.com/kval-access-language) - A proposed grammar for key-value datastores offering a bbolt binding.
+* [Key Value Access Language (KVAL)](https://github.com/kval-access-language) - A proposed grammar for key-value datastores offering a bbolt binding.
 * [LedisDB](https://github.com/siddontang/ledisdb) - A high performance NoSQL, using Bolt as optional storage.
 * [lru](https://github.com/crowdriff/lru) - Easy to use Bolt-backed Least-Recently-Used (LRU) read-through cache with chainable remote stores.
 * [mbuckets](https://github.com/abhigupta912/mbuckets) - A Bolt wrapper that allows easy operations on multi level (nested) buckets.
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_arm64.go b/backend/vendor/go.etcd.io/bbolt/bolt_arm64.go
index 810dfd55..447bc197 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_arm64.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_arm64.go
@@ -1,3 +1,4 @@
+//go:build arm64
 // +build arm64
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_loong64.go b/backend/vendor/go.etcd.io/bbolt/bolt_loong64.go
new file mode 100644
index 00000000..31c17c1d
--- /dev/null
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_loong64.go
@@ -0,0 +1,10 @@
+//go:build loong64
+// +build loong64
+
+package bbolt
+
+// maxMapSize represents the largest mmap size supported by Bolt.
+const maxMapSize = 0xFFFFFFFFFFFF // 256TB
+
+// maxAllocSize is the size used when creating array pointers.
+const maxAllocSize = 0x7FFFFFFF
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_mips64x.go b/backend/vendor/go.etcd.io/bbolt/bolt_mips64x.go
index dd8ffe12..a9385beb 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_mips64x.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_mips64x.go
@@ -1,3 +1,4 @@
+//go:build mips64 || mips64le
 // +build mips64 mips64le
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_mipsx.go b/backend/vendor/go.etcd.io/bbolt/bolt_mipsx.go
index a669703a..ed734ff7 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_mipsx.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_mipsx.go
@@ -1,3 +1,4 @@
+//go:build mips || mipsle
 // +build mips mipsle
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_ppc.go b/backend/vendor/go.etcd.io/bbolt/bolt_ppc.go
index 84e545ef..e403f57d 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_ppc.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_ppc.go
@@ -1,3 +1,4 @@
+//go:build ppc
 // +build ppc
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_ppc64.go b/backend/vendor/go.etcd.io/bbolt/bolt_ppc64.go
index a7612090..fcd86529 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_ppc64.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_ppc64.go
@@ -1,3 +1,4 @@
+//go:build ppc64
 // +build ppc64
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_ppc64le.go b/backend/vendor/go.etcd.io/bbolt/bolt_ppc64le.go
index c830f2fc..20234aca 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_ppc64le.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_ppc64le.go
@@ -1,3 +1,4 @@
+//go:build ppc64le
 // +build ppc64le
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_riscv64.go b/backend/vendor/go.etcd.io/bbolt/bolt_riscv64.go
index c967613b..060f30c7 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_riscv64.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_riscv64.go
@@ -1,3 +1,4 @@
+//go:build riscv64
 // +build riscv64
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_s390x.go b/backend/vendor/go.etcd.io/bbolt/bolt_s390x.go
index ff2a5609..92d2755a 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_s390x.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_s390x.go
@@ -1,3 +1,4 @@
+//go:build s390x
 // +build s390x
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_unix.go b/backend/vendor/go.etcd.io/bbolt/bolt_unix.go
index 4e5f65cc..757ae4d1 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_unix.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_unix.go
@@ -1,3 +1,4 @@
+//go:build !windows && !plan9 && !solaris && !aix
 // +build !windows,!plan9,!solaris,!aix
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_unix_aix.go b/backend/vendor/go.etcd.io/bbolt/bolt_unix_aix.go
index a64c16f5..6dea4294 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_unix_aix.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_unix_aix.go
@@ -1,3 +1,4 @@
+//go:build aix
 // +build aix
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bolt_windows.go b/backend/vendor/go.etcd.io/bbolt/bolt_windows.go
index fca178bd..e5dde274 100644
--- a/backend/vendor/go.etcd.io/bbolt/bolt_windows.go
+++ b/backend/vendor/go.etcd.io/bbolt/bolt_windows.go
@@ -6,40 +6,10 @@ import (
 	"syscall"
 	"time"
 	"unsafe"
+
+	"golang.org/x/sys/windows"
 )
 
-// LockFileEx code derived from golang build filemutex_windows.go @ v1.5.1
-var (
-	modkernel32      = syscall.NewLazyDLL("kernel32.dll")
-	procLockFileEx   = modkernel32.NewProc("LockFileEx")
-	procUnlockFileEx = modkernel32.NewProc("UnlockFileEx")
-)
-
-const (
-	// see https://msdn.microsoft.com/en-us/library/windows/desktop/aa365203(v=vs.85).aspx
-	flagLockExclusive       = 2
-	flagLockFailImmediately = 1
-
-	// see https://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx
-	errLockViolation syscall.Errno = 0x21
-)
-
-func lockFileEx(h syscall.Handle, flags, reserved, locklow, lockhigh uint32, ol *syscall.Overlapped) (err error) {
-	r, _, err := procLockFileEx.Call(uintptr(h), uintptr(flags), uintptr(reserved), uintptr(locklow), uintptr(lockhigh), uintptr(unsafe.Pointer(ol)))
-	if r == 0 {
-		return err
-	}
-	return nil
-}
-
-func unlockFileEx(h syscall.Handle, reserved, locklow, lockhigh uint32, ol *syscall.Overlapped) (err error) {
-	r, _, err := procUnlockFileEx.Call(uintptr(h), uintptr(reserved), uintptr(locklow), uintptr(lockhigh), uintptr(unsafe.Pointer(ol)), 0)
-	if r == 0 {
-		return err
-	}
-	return nil
-}
-
 // fdatasync flushes written data to a file descriptor.
 func fdatasync(db *DB) error {
 	return db.file.Sync()
@@ -51,22 +21,22 @@ func flock(db *DB, exclusive bool, timeout time.Duration) error {
 	if timeout != 0 {
 		t = time.Now()
 	}
-	var flag uint32 = flagLockFailImmediately
+	var flags uint32 = windows.LOCKFILE_FAIL_IMMEDIATELY
 	if exclusive {
-		flag |= flagLockExclusive
+		flags |= windows.LOCKFILE_EXCLUSIVE_LOCK
 	}
 	for {
 		// Fix for https://github.com/etcd-io/bbolt/issues/121. Use byte-range
 		// -1..0 as the lock on the database file.
 		var m1 uint32 = (1 << 32) - 1 // -1 in a uint32
-		err := lockFileEx(syscall.Handle(db.file.Fd()), flag, 0, 1, 0, &syscall.Overlapped{
+		err := windows.LockFileEx(windows.Handle(db.file.Fd()), flags, 0, 1, 0, &windows.Overlapped{
 			Offset:     m1,
 			OffsetHigh: m1,
 		})
 
 		if err == nil {
 			return nil
-		} else if err != errLockViolation {
+		} else if err != windows.ERROR_LOCK_VIOLATION {
 			return err
 		}
 
@@ -83,34 +53,37 @@ func flock(db *DB, exclusive bool, timeout time.Duration) error {
 // funlock releases an advisory lock on a file descriptor.
 func funlock(db *DB) error {
 	var m1 uint32 = (1 << 32) - 1 // -1 in a uint32
-	err := unlockFileEx(syscall.Handle(db.file.Fd()), 0, 1, 0, &syscall.Overlapped{
+	return windows.UnlockFileEx(windows.Handle(db.file.Fd()), 0, 1, 0, &windows.Overlapped{
 		Offset:     m1,
 		OffsetHigh: m1,
 	})
-	return err
 }
 
 // mmap memory maps a DB's data file.
 // Based on: https://github.com/edsrzf/mmap-go
 func mmap(db *DB, sz int) error {
+	var sizelo, sizehi uint32
+
 	if !db.readOnly {
 		// Truncate the database to the size of the mmap.
 		if err := db.file.Truncate(int64(sz)); err != nil {
 			return fmt.Errorf("truncate: %s", err)
 		}
+		sizehi = uint32(sz >> 32)
+		sizelo = uint32(sz) & 0xffffffff
 	}
 
 	// Open a file mapping handle.
-	sizelo := uint32(sz >> 32)
-	sizehi := uint32(sz) & 0xffffffff
-	h, errno := syscall.CreateFileMapping(syscall.Handle(db.file.Fd()), nil, syscall.PAGE_READONLY, sizelo, sizehi, nil)
+	h, errno := syscall.CreateFileMapping(syscall.Handle(db.file.Fd()), nil, syscall.PAGE_READONLY, sizehi, sizelo, nil)
 	if h == 0 {
 		return os.NewSyscallError("CreateFileMapping", errno)
 	}
 
 	// Create the memory map.
-	addr, errno := syscall.MapViewOfFile(h, syscall.FILE_MAP_READ, 0, 0, uintptr(sz))
+	addr, errno := syscall.MapViewOfFile(h, syscall.FILE_MAP_READ, 0, 0, 0)
 	if addr == 0 {
+		// Do our best and report error returned from MapViewOfFile.
+		_ = syscall.CloseHandle(h)
 		return os.NewSyscallError("MapViewOfFile", errno)
 	}
 
@@ -134,8 +107,11 @@ func munmap(db *DB) error {
 	}
 
 	addr := (uintptr)(unsafe.Pointer(&db.data[0]))
+	var err1 error
 	if err := syscall.UnmapViewOfFile(addr); err != nil {
-		return os.NewSyscallError("UnmapViewOfFile", err)
+		err1 = os.NewSyscallError("UnmapViewOfFile", err)
 	}
-	return nil
+	db.data = nil
+	db.datasz = 0
+	return err1
 }
diff --git a/backend/vendor/go.etcd.io/bbolt/boltsync_unix.go b/backend/vendor/go.etcd.io/bbolt/boltsync_unix.go
index 9587afef..81e09a53 100644
--- a/backend/vendor/go.etcd.io/bbolt/boltsync_unix.go
+++ b/backend/vendor/go.etcd.io/bbolt/boltsync_unix.go
@@ -1,3 +1,4 @@
+//go:build !windows && !plan9 && !linux && !openbsd
 // +build !windows,!plan9,!linux,!openbsd
 
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/bucket.go b/backend/vendor/go.etcd.io/bbolt/bucket.go
index d8750b14..054467af 100644
--- a/backend/vendor/go.etcd.io/bbolt/bucket.go
+++ b/backend/vendor/go.etcd.io/bbolt/bucket.go
@@ -81,7 +81,7 @@ func (b *Bucket) Writable() bool {
 // Do not use a cursor after the transaction is closed.
 func (b *Bucket) Cursor() *Cursor {
 	// Update transaction statistics.
-	b.tx.stats.CursorCount++
+	b.tx.stats.IncCursorCount(1)
 
 	// Allocate and return a cursor.
 	return &Cursor{
@@ -229,11 +229,9 @@ func (b *Bucket) DeleteBucket(key []byte) error {
 
 	// Recursively delete all child buckets.
 	child := b.Bucket(key)
-	err := child.ForEach(func(k, v []byte) error {
-		if _, _, childFlags := child.Cursor().seek(k); (childFlags & bucketLeafFlag) != 0 {
-			if err := child.DeleteBucket(k); err != nil {
-				return fmt.Errorf("delete bucket: %s", err)
-			}
+	err := child.ForEachBucket(func(k []byte) error {
+		if err := child.DeleteBucket(k); err != nil {
+			return fmt.Errorf("delete bucket: %s", err)
 		}
 		return nil
 	})
@@ -353,7 +351,7 @@ func (b *Bucket) SetSequence(v uint64) error {
 		_ = b.node(b.root, nil)
 	}
 
-	// Increment and return the sequence.
+	// Set the sequence.
 	b.bucket.sequence = v
 	return nil
 }
@@ -378,6 +376,7 @@ func (b *Bucket) NextSequence() (uint64, error) {
 }
 
 // ForEach executes a function for each key/value pair in a bucket.
+// Because ForEach uses a Cursor, the iteration over keys is in lexicographical order.
 // If the provided function returns an error then the iteration is stopped and
 // the error is returned to the caller. The provided function must not modify
 // the bucket; this will result in undefined behavior.
@@ -394,7 +393,22 @@ func (b *Bucket) ForEach(fn func(k, v []byte) error) error {
 	return nil
 }
 
-// Stat returns stats on a bucket.
+func (b *Bucket) ForEachBucket(fn func(k []byte) error) error {
+	if b.tx.db == nil {
+		return ErrTxClosed
+	}
+	c := b.Cursor()
+	for k, _, flags := c.first(); k != nil; k, _, flags = c.next() {
+		if flags&bucketLeafFlag != 0 {
+			if err := fn(k); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// Stats returns stats on a bucket.
 func (b *Bucket) Stats() BucketStats {
 	var s, subStats BucketStats
 	pageSize := b.tx.db.pageSize
@@ -402,7 +416,7 @@ func (b *Bucket) Stats() BucketStats {
 	if b.root == 0 {
 		s.InlineBucketN += 1
 	}
-	b.forEachPage(func(p *page, depth int) {
+	b.forEachPage(func(p *page, depth int, pgstack []pgid) {
 		if (p.flags & leafPageFlag) != 0 {
 			s.KeyN += int(p.count)
 
@@ -461,7 +475,7 @@ func (b *Bucket) Stats() BucketStats {
 
 		// Keep track of maximum page depth.
 		if depth+1 > s.Depth {
-			s.Depth = (depth + 1)
+			s.Depth = depth + 1
 		}
 	})
 
@@ -477,15 +491,15 @@ func (b *Bucket) Stats() BucketStats {
 }
 
 // forEachPage iterates over every page in a bucket, including inline pages.
-func (b *Bucket) forEachPage(fn func(*page, int)) {
+func (b *Bucket) forEachPage(fn func(*page, int, []pgid)) {
 	// If we have an inline page then just use that.
 	if b.page != nil {
-		fn(b.page, 0)
+		fn(b.page, 0, []pgid{b.root})
 		return
 	}
 
 	// Otherwise traverse the page hierarchy.
-	b.tx.forEachPage(b.root, 0, fn)
+	b.tx.forEachPage(b.root, fn)
 }
 
 // forEachPageNode iterates over every page (or node) in a bucket.
@@ -499,8 +513,8 @@ func (b *Bucket) forEachPageNode(fn func(*page, *node, int)) {
 	b._forEachPageNode(b.root, 0, fn)
 }
 
-func (b *Bucket) _forEachPageNode(pgid pgid, depth int, fn func(*page, *node, int)) {
-	var p, n = b.pageNode(pgid)
+func (b *Bucket) _forEachPageNode(pgId pgid, depth int, fn func(*page, *node, int)) {
+	var p, n = b.pageNode(pgId)
 
 	// Execute function.
 	fn(p, n, depth)
@@ -640,11 +654,11 @@ func (b *Bucket) rebalance() {
 }
 
 // node creates a node from a page and associates it with a given parent.
-func (b *Bucket) node(pgid pgid, parent *node) *node {
+func (b *Bucket) node(pgId pgid, parent *node) *node {
 	_assert(b.nodes != nil, "nodes map expected")
 
 	// Retrieve node if it's already been created.
-	if n := b.nodes[pgid]; n != nil {
+	if n := b.nodes[pgId]; n != nil {
 		return n
 	}
 
@@ -659,15 +673,15 @@ func (b *Bucket) node(pgid pgid, parent *node) *node {
 	// Use the inline page if this is an inline bucket.
 	var p = b.page
 	if p == nil {
-		p = b.tx.page(pgid)
+		p = b.tx.page(pgId)
 	}
 
 	// Read the page into the node and cache it.
 	n.read(p)
-	b.nodes[pgid] = n
+	b.nodes[pgId] = n
 
 	// Update statistics.
-	b.tx.stats.NodeCount++
+	b.tx.stats.IncNodeCount(1)
 
 	return n
 }
diff --git a/backend/vendor/go.etcd.io/bbolt/compact.go b/backend/vendor/go.etcd.io/bbolt/compact.go
index e4fe91b0..5f1d4c3b 100644
--- a/backend/vendor/go.etcd.io/bbolt/compact.go
+++ b/backend/vendor/go.etcd.io/bbolt/compact.go
@@ -12,7 +12,11 @@ func Compact(dst, src *DB, txMaxSize int64) error {
 	if err != nil {
 		return err
 	}
-	defer tx.Rollback()
+	defer func() {
+		if tempErr := tx.Rollback(); tempErr != nil {
+			err = tempErr
+		}
+	}()
 
 	if err := walk(src, func(keys [][]byte, k, v []byte, seq uint64) error {
 		// On each key/value, check if we have exceeded tx size.
@@ -73,8 +77,9 @@ func Compact(dst, src *DB, txMaxSize int64) error {
 	}); err != nil {
 		return err
 	}
+	err = tx.Commit()
 
-	return tx.Commit()
+	return err
 }
 
 // walkFunc is the type of the function called for keys (buckets and "normal"
diff --git a/backend/vendor/go.etcd.io/bbolt/cursor.go b/backend/vendor/go.etcd.io/bbolt/cursor.go
index 98aeb449..5dafb0ca 100644
--- a/backend/vendor/go.etcd.io/bbolt/cursor.go
+++ b/backend/vendor/go.etcd.io/bbolt/cursor.go
@@ -6,7 +6,8 @@ import (
 	"sort"
 )
 
-// Cursor represents an iterator that can traverse over all key/value pairs in a bucket in sorted order.
+// Cursor represents an iterator that can traverse over all key/value pairs in a bucket
+// in lexicographical order.
 // Cursors see nested buckets with value == nil.
 // Cursors can be obtained from a transaction and are valid as long as the transaction is open.
 //
@@ -30,10 +31,18 @@ func (c *Cursor) Bucket() *Bucket {
 // The returned key and value are only valid for the life of the transaction.
 func (c *Cursor) First() (key []byte, value []byte) {
 	_assert(c.bucket.tx.db != nil, "tx closed")
+	k, v, flags := c.first()
+	if (flags & uint32(bucketLeafFlag)) != 0 {
+		return k, nil
+	}
+	return k, v
+}
+
+func (c *Cursor) first() (key []byte, value []byte, flags uint32) {
 	c.stack = c.stack[:0]
 	p, n := c.bucket.pageNode(c.bucket.root)
 	c.stack = append(c.stack, elemRef{page: p, node: n, index: 0})
-	c.first()
+	c.goToFirstElementOnTheStack()
 
 	// If we land on an empty page then move to the next value.
 	// https://github.com/boltdb/bolt/issues/450
@@ -43,10 +52,9 @@ func (c *Cursor) First() (key []byte, value []byte) {
 
 	k, v, flags := c.keyValue()
 	if (flags & uint32(bucketLeafFlag)) != 0 {
-		return k, nil
+		return k, nil, flags
 	}
-	return k, v
-
+	return k, v, flags
 }
 
 // Last moves the cursor to the last item in the bucket and returns its key and value.
@@ -60,6 +68,17 @@ func (c *Cursor) Last() (key []byte, value []byte) {
 	ref.index = ref.count() - 1
 	c.stack = append(c.stack, ref)
 	c.last()
+
+	// If this is an empty page (calling Delete may result in empty pages)
+	// we call prev to find the last page that is not empty
+	for len(c.stack) > 0 && c.stack[len(c.stack)-1].count() == 0 {
+		c.prev()
+	}
+
+	if len(c.stack) == 0 {
+		return nil, nil
+	}
+
 	k, v, flags := c.keyValue()
 	if (flags & uint32(bucketLeafFlag)) != 0 {
 		return k, nil
@@ -84,37 +103,20 @@ func (c *Cursor) Next() (key []byte, value []byte) {
 // The returned key and value are only valid for the life of the transaction.
 func (c *Cursor) Prev() (key []byte, value []byte) {
 	_assert(c.bucket.tx.db != nil, "tx closed")
-
-	// Attempt to move back one element until we're successful.
-	// Move up the stack as we hit the beginning of each page in our stack.
-	for i := len(c.stack) - 1; i >= 0; i-- {
-		elem := &c.stack[i]
-		if elem.index > 0 {
-			elem.index--
-			break
-		}
-		c.stack = c.stack[:i]
-	}
-
-	// If we've hit the end then return nil.
-	if len(c.stack) == 0 {
-		return nil, nil
-	}
-
-	// Move down the stack to find the last element of the last leaf under this branch.
-	c.last()
-	k, v, flags := c.keyValue()
+	k, v, flags := c.prev()
 	if (flags & uint32(bucketLeafFlag)) != 0 {
 		return k, nil
 	}
 	return k, v
 }
 
-// Seek moves the cursor to a given key and returns it.
+// Seek moves the cursor to a given key using a b-tree search and returns it.
 // If the key does not exist then the next key is used. If no keys
 // follow, a nil key is returned.
 // The returned key and value are only valid for the life of the transaction.
 func (c *Cursor) Seek(seek []byte) (key []byte, value []byte) {
+	_assert(c.bucket.tx.db != nil, "tx closed")
+
 	k, v, flags := c.seek(seek)
 
 	// If we ended up after the last element of a page then move to the next one.
@@ -152,8 +154,6 @@ func (c *Cursor) Delete() error {
 // seek moves the cursor to a given key and returns it.
 // If the key does not exist then the next key is used.
 func (c *Cursor) seek(seek []byte) (key []byte, value []byte, flags uint32) {
-	_assert(c.bucket.tx.db != nil, "tx closed")
-
 	// Start from root page/node and traverse to correct page.
 	c.stack = c.stack[:0]
 	c.search(seek, c.bucket.root)
@@ -163,7 +163,7 @@ func (c *Cursor) seek(seek []byte) (key []byte, value []byte, flags uint32) {
 }
 
 // first moves the cursor to the first leaf element under the last page in the stack.
-func (c *Cursor) first() {
+func (c *Cursor) goToFirstElementOnTheStack() {
 	for {
 		// Exit when we hit a leaf page.
 		var ref = &c.stack[len(c.stack)-1]
@@ -172,13 +172,13 @@ func (c *Cursor) first() {
 		}
 
 		// Keep adding pages pointing to the first element to the stack.
-		var pgid pgid
+		var pgId pgid
 		if ref.node != nil {
-			pgid = ref.node.inodes[ref.index].pgid
+			pgId = ref.node.inodes[ref.index].pgid
 		} else {
-			pgid = ref.page.branchPageElement(uint16(ref.index)).pgid
+			pgId = ref.page.branchPageElement(uint16(ref.index)).pgid
 		}
-		p, n := c.bucket.pageNode(pgid)
+		p, n := c.bucket.pageNode(pgId)
 		c.stack = append(c.stack, elemRef{page: p, node: n, index: 0})
 	}
 }
@@ -193,13 +193,13 @@ func (c *Cursor) last() {
 		}
 
 		// Keep adding pages pointing to the last element in the stack.
-		var pgid pgid
+		var pgId pgid
 		if ref.node != nil {
-			pgid = ref.node.inodes[ref.index].pgid
+			pgId = ref.node.inodes[ref.index].pgid
 		} else {
-			pgid = ref.page.branchPageElement(uint16(ref.index)).pgid
+			pgId = ref.page.branchPageElement(uint16(ref.index)).pgid
 		}
-		p, n := c.bucket.pageNode(pgid)
+		p, n := c.bucket.pageNode(pgId)
 
 		var nextRef = elemRef{page: p, node: n}
 		nextRef.index = nextRef.count() - 1
@@ -231,7 +231,7 @@ func (c *Cursor) next() (key []byte, value []byte, flags uint32) {
 		// Otherwise start from where we left off in the stack and find the
 		// first element of the first leaf page.
 		c.stack = c.stack[:i+1]
-		c.first()
+		c.goToFirstElementOnTheStack()
 
 		// If this is an empty page then restart and move back up the stack.
 		// https://github.com/boltdb/bolt/issues/450
@@ -243,9 +243,33 @@ func (c *Cursor) next() (key []byte, value []byte, flags uint32) {
 	}
 }
 
+// prev moves the cursor to the previous item in the bucket and returns its key and value.
+// If the cursor is at the beginning of the bucket then a nil key and value are returned.
+func (c *Cursor) prev() (key []byte, value []byte, flags uint32) {
+	// Attempt to move back one element until we're successful.
+	// Move up the stack as we hit the beginning of each page in our stack.
+	for i := len(c.stack) - 1; i >= 0; i-- {
+		elem := &c.stack[i]
+		if elem.index > 0 {
+			elem.index--
+			break
+		}
+		c.stack = c.stack[:i]
+	}
+
+	// If we've hit the end then return nil.
+	if len(c.stack) == 0 {
+		return nil, nil, 0
+	}
+
+	// Move down the stack to find the last element of the last leaf under this branch.
+	c.last()
+	return c.keyValue()
+}
+
 // search recursively performs a binary search against a given page/node until it finds a given key.
-func (c *Cursor) search(key []byte, pgid pgid) {
-	p, n := c.bucket.pageNode(pgid)
+func (c *Cursor) search(key []byte, pgId pgid) {
+	p, n := c.bucket.pageNode(pgId)
 	if p != nil && (p.flags&(branchPageFlag|leafPageFlag)) == 0 {
 		panic(fmt.Sprintf("invalid page type: %d: %x", p.id, p.flags))
 	}
diff --git a/backend/vendor/go.etcd.io/bbolt/db.go b/backend/vendor/go.etcd.io/bbolt/db.go
index a798c390..c9422127 100644
--- a/backend/vendor/go.etcd.io/bbolt/db.go
+++ b/backend/vendor/go.etcd.io/bbolt/db.go
@@ -4,7 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"hash/fnv"
-	"log"
+	"io"
 	"os"
 	"runtime"
 	"sort"
@@ -81,7 +81,7 @@ type DB struct {
 	NoFreelistSync bool
 
 	// FreelistType sets the backend freelist type. There are two options. Array which is simple but endures
-	// dramatic performance degradation if database is large and framentation in freelist is common.
+	// dramatic performance degradation if database is large and fragmentation in freelist is common.
 	// The alternative one is using hashmap, it is faster in almost all circumstances
 	// but it doesn't guarantee that it offers the smallest page id available. In normal case it is safe.
 	// The default type is array
@@ -95,6 +95,11 @@ type DB struct {
 	// https://github.com/boltdb/bolt/issues/284
 	NoGrowSync bool
 
+	// When `true`, bbolt will always load the free pages when opening the DB.
+	// When opening db in write mode, this flag will always automatically
+	// set to `true`.
+	PreLoadFreelist bool
+
 	// If you want to read the entire database fast, you can set MmapFlag to
 	// syscall.MAP_POPULATE on Linux 2.6.23+ for sequential read-ahead.
 	MmapFlags int
@@ -129,6 +134,9 @@ type DB struct {
 	path     string
 	openFile func(string, int, os.FileMode) (*os.File, error)
 	file     *os.File
+	// `dataref` isn't used at all on Windows, and the golangci-lint
+	// always fails on Windows platform.
+	//nolint
 	dataref  []byte // mmap'ed readonly, write throws SEGV
 	data     *[maxMapSize]byte
 	datasz   int
@@ -193,6 +201,7 @@ func Open(path string, mode os.FileMode, options *Options) (*DB, error) {
 	db.NoGrowSync = options.NoGrowSync
 	db.MmapFlags = options.MmapFlags
 	db.NoFreelistSync = options.NoFreelistSync
+	db.PreLoadFreelist = options.PreLoadFreelist
 	db.FreelistType = options.FreelistType
 	db.Mlock = options.Mlock
 
@@ -205,6 +214,9 @@ func Open(path string, mode os.FileMode, options *Options) (*DB, error) {
 	if options.ReadOnly {
 		flag = os.O_RDONLY
 		db.readOnly = true
+	} else {
+		// always load free pages in write mode
+		db.PreLoadFreelist = true
 	}
 
 	db.openFile = options.OpenFile
@@ -252,21 +264,9 @@ func Open(path string, mode os.FileMode, options *Options) (*DB, error) {
 			return nil, err
 		}
 	} else {
-		// Read the first meta page to determine the page size.
-		var buf [0x1000]byte
-		// If we can't read the page size, but can read a page, assume
-		// it's the same as the OS or one given -- since that's how the
-		// page size was chosen in the first place.
-		//
-		// If the first page is invalid and this OS uses a different
-		// page size than what the database was created with then we
-		// are out of luck and cannot access the database.
-		//
-		// TODO: scan for next page
-		if bw, err := db.file.ReadAt(buf[:], 0); err == nil && bw == len(buf) {
-			if m := db.pageInBuffer(buf[:], 0).meta(); m.validate() == nil {
-				db.pageSize = int(m.pageSize)
-			}
+		// try to get the page size from the metadata pages
+		if pgSize, err := db.getPageSize(); err == nil {
+			db.pageSize = pgSize
 		} else {
 			_ = db.close()
 			return nil, ErrInvalid
@@ -286,12 +286,14 @@ func Open(path string, mode os.FileMode, options *Options) (*DB, error) {
 		return nil, err
 	}
 
+	if db.PreLoadFreelist {
+		db.loadFreelist()
+	}
+
 	if db.readOnly {
 		return db, nil
 	}
 
-	db.loadFreelist()
-
 	// Flush freelist when transitioning from no sync to sync so
 	// NoFreelistSync unaware boltdb can open the db later.
 	if !db.NoFreelistSync && !db.hasSyncedFreelist() {
@@ -309,6 +311,96 @@ func Open(path string, mode os.FileMode, options *Options) (*DB, error) {
 	return db, nil
 }
 
+// getPageSize reads the pageSize from the meta pages. It tries
+// to read the first meta page firstly. If the first page is invalid,
+// then it tries to read the second page using the default page size.
+func (db *DB) getPageSize() (int, error) {
+	var (
+		meta0CanRead, meta1CanRead bool
+	)
+
+	// Read the first meta page to determine the page size.
+	if pgSize, canRead, err := db.getPageSizeFromFirstMeta(); err != nil {
+		// We cannot read the page size from page 0, but can read page 0.
+		meta0CanRead = canRead
+	} else {
+		return pgSize, nil
+	}
+
+	// Read the second meta page to determine the page size.
+	if pgSize, canRead, err := db.getPageSizeFromSecondMeta(); err != nil {
+		// We cannot read the page size from page 1, but can read page 1.
+		meta1CanRead = canRead
+	} else {
+		return pgSize, nil
+	}
+
+	// If we can't read the page size from both pages, but can read
+	// either page, then we assume it's the same as the OS or the one
+	// given, since that's how the page size was chosen in the first place.
+	//
+	// If both pages are invalid, and (this OS uses a different page size
+	// from what the database was created with or the given page size is
+	// different from what the database was created with), then we are out
+	// of luck and cannot access the database.
+	if meta0CanRead || meta1CanRead {
+		return db.pageSize, nil
+	}
+
+	return 0, ErrInvalid
+}
+
+// getPageSizeFromFirstMeta reads the pageSize from the first meta page
+func (db *DB) getPageSizeFromFirstMeta() (int, bool, error) {
+	var buf [0x1000]byte
+	var metaCanRead bool
+	if bw, err := db.file.ReadAt(buf[:], 0); err == nil && bw == len(buf) {
+		metaCanRead = true
+		if m := db.pageInBuffer(buf[:], 0).meta(); m.validate() == nil {
+			return int(m.pageSize), metaCanRead, nil
+		}
+	}
+	return 0, metaCanRead, ErrInvalid
+}
+
+// getPageSizeFromSecondMeta reads the pageSize from the second meta page
+func (db *DB) getPageSizeFromSecondMeta() (int, bool, error) {
+	var (
+		fileSize    int64
+		metaCanRead bool
+	)
+
+	// get the db file size
+	if info, err := db.file.Stat(); err != nil {
+		return 0, metaCanRead, err
+	} else {
+		fileSize = info.Size()
+	}
+
+	// We need to read the second meta page, so we should skip the first page;
+	// but we don't know the exact page size yet, it's chicken & egg problem.
+	// The solution is to try all the possible page sizes, which starts from 1KB
+	// and until 16MB (1024<<14) or the end of the db file
+	//
+	// TODO: should we support larger page size?
+	for i := 0; i <= 14; i++ {
+		var buf [0x1000]byte
+		var pos int64 = 1024 << uint(i)
+		if pos >= fileSize-1024 {
+			break
+		}
+		bw, err := db.file.ReadAt(buf[:], pos)
+		if (err == nil && bw == len(buf)) || (err == io.EOF && int64(bw) == (fileSize-pos)) {
+			metaCanRead = true
+			if m := db.pageInBuffer(buf[:], 0).meta(); m.validate() == nil {
+				return int(m.pageSize), metaCanRead, nil
+			}
+		}
+	}
+
+	return 0, metaCanRead, ErrInvalid
+}
+
 // loadFreelist reads the freelist if it is synced, or reconstructs it
 // by scanning the DB if it is not synced. It assumes there are no
 // concurrent accesses being made to the freelist.
@@ -372,6 +464,8 @@ func (db *DB) mmap(minsz int) error {
 	}
 
 	// Memory-map the data file as a byte slice.
+	// gofail: var mapError string
+	// return errors.New(mapError)
 	if err := mmap(db, size); err != nil {
 		return err
 	}
@@ -399,11 +493,25 @@ func (db *DB) mmap(minsz int) error {
 	return nil
 }
 
+func (db *DB) invalidate() {
+	db.dataref = nil
+	db.data = nil
+	db.datasz = 0
+
+	db.meta0 = nil
+	db.meta1 = nil
+}
+
 // munmap unmaps the data file from memory.
 func (db *DB) munmap() error {
+	defer db.invalidate()
+
+	// gofail: var unmapError string
+	// return errors.New(unmapError)
 	if err := munmap(db); err != nil {
 		return fmt.Errorf("unmap error: " + err.Error())
 	}
+
 	return nil
 }
 
@@ -552,7 +660,7 @@ func (db *DB) close() error {
 		if !db.readOnly {
 			// Unlock the file.
 			if err := funlock(db); err != nil {
-				log.Printf("bolt.Close(): funlock error: %s", err)
+				return fmt.Errorf("bolt.Close(): funlock error: %w", err)
 			}
 		}
 
@@ -609,6 +717,13 @@ func (db *DB) beginTx() (*Tx, error) {
 		return nil, ErrDatabaseNotOpen
 	}
 
+	// Exit if the database is not correctly mapped.
+	if db.data == nil {
+		db.mmaplock.RUnlock()
+		db.metalock.Unlock()
+		return nil, ErrInvalidMapping
+	}
+
 	// Create a transaction associated with the database.
 	t := &Tx{}
 	t.init(db)
@@ -650,6 +765,12 @@ func (db *DB) beginRWTx() (*Tx, error) {
 		return nil, ErrDatabaseNotOpen
 	}
 
+	// Exit if the database is not correctly mapped.
+	if db.data == nil {
+		db.rwlock.Unlock()
+		return nil, ErrInvalidMapping
+	}
+
 	// Create a transaction associated with the database.
 	t := &Tx{writable: true}
 	t.init(db)
@@ -924,6 +1045,7 @@ func (db *DB) Stats() Stats {
 // This is for internal access to the raw data bytes from the C cursor, use
 // carefully, or not at all.
 func (db *DB) Info() *Info {
+	_assert(db.data != nil, "database file isn't correctly mapped")
 	return &Info{uintptr(unsafe.Pointer(&db.data[0])), db.pageSize}
 }
 
@@ -950,7 +1072,7 @@ func (db *DB) meta() *meta {
 		metaB = db.meta0
 	}
 
-	// Use higher meta page if valid. Otherwise fallback to previous, if valid.
+	// Use higher meta page if valid. Otherwise, fallback to previous, if valid.
 	if err := metaA.validate(); err == nil {
 		return metaA
 	} else if err := metaB.validate(); err == nil {
@@ -1003,7 +1125,7 @@ func (db *DB) grow(sz int) error {
 
 	// If the data is smaller than the alloc size then only allocate what's needed.
 	// Once it goes over the allocation size then allocate in chunks.
-	if db.datasz < db.AllocSize {
+	if db.datasz <= db.AllocSize {
 		sz = db.datasz
 	} else {
 		sz += db.AllocSize
@@ -1056,9 +1178,11 @@ func (db *DB) freepages() []pgid {
 			panic(fmt.Sprintf("freepages: failed to get all reachable pages (%v)", e))
 		}
 	}()
-	tx.checkBucket(&tx.root, reachable, nofreed, ech)
+	tx.checkBucket(&tx.root, reachable, nofreed, HexKVStringer(), ech)
 	close(ech)
 
+	// TODO: If check bucket reported any corruptions (ech) we shouldn't proceed to freeing the pages.
+
 	var fids []pgid
 	for i := pgid(2); i < db.meta().pgid; i++ {
 		if _, ok := reachable[i]; !ok {
@@ -1082,8 +1206,13 @@ type Options struct {
 	// under normal operation, but requires a full database re-sync during recovery.
 	NoFreelistSync bool
 
+	// PreLoadFreelist sets whether to load the free pages when opening
+	// the db file. Note when opening db in write mode, bbolt will always
+	// load the free pages.
+	PreLoadFreelist bool
+
 	// FreelistType sets the backend freelist type. There are two options. Array which is simple but endures
-	// dramatic performance degradation if database is large and framentation in freelist is common.
+	// dramatic performance degradation if database is large and fragmentation in freelist is common.
 	// The alternative one is using hashmap, it is faster in almost all circumstances
 	// but it doesn't guarantee that it offers the smallest page id available. In normal case it is safe.
 	// The default type is array
@@ -1187,7 +1316,7 @@ func (m *meta) validate() error {
 		return ErrInvalid
 	} else if m.version != version {
 		return ErrVersionMismatch
-	} else if m.checksum != 0 && m.checksum != m.sum64() {
+	} else if m.checksum != m.sum64() {
 		return ErrChecksum
 	}
 	return nil
diff --git a/backend/vendor/go.etcd.io/bbolt/doc.go b/backend/vendor/go.etcd.io/bbolt/doc.go
index 95f25f01..d1007e4b 100644
--- a/backend/vendor/go.etcd.io/bbolt/doc.go
+++ b/backend/vendor/go.etcd.io/bbolt/doc.go
@@ -14,8 +14,7 @@ The design of Bolt is based on Howard Chu's LMDB database project.
 
 Bolt currently works on Windows, Mac OS X, and Linux.
 
-
-Basics
+# Basics
 
 There are only a few types in Bolt: DB, Bucket, Tx, and Cursor. The DB is
 a collection of buckets and is represented by a single file on disk. A bucket is
@@ -27,8 +26,7 @@ iterate over the dataset sequentially. Read-write transactions can create and
 delete buckets and can insert and remove keys. Only one read-write transaction
 is allowed at a time.
 
-
-Caveats
+# Caveats
 
 The database uses a read-only, memory-mapped data file to ensure that
 applications cannot corrupt the database, however, this means that keys and
@@ -38,7 +36,5 @@ will cause Go to panic.
 Keys and values retrieved from the database are only valid for the life of
 the transaction. When used outside the transaction, these byte slices can
 point to different data or can point to invalid memory which will cause a panic.
-
-
 */
 package bbolt
diff --git a/backend/vendor/go.etcd.io/bbolt/errors.go b/backend/vendor/go.etcd.io/bbolt/errors.go
index 48758ca5..f2c3b20e 100644
--- a/backend/vendor/go.etcd.io/bbolt/errors.go
+++ b/backend/vendor/go.etcd.io/bbolt/errors.go
@@ -16,6 +16,9 @@ var (
 	// This typically occurs when a file is not a bolt database.
 	ErrInvalid = errors.New("invalid database")
 
+	// ErrInvalidMapping is returned when the database file fails to get mapped.
+	ErrInvalidMapping = errors.New("database isn't correctly mapped")
+
 	// ErrVersionMismatch is returned when the data file was created with a
 	// different version of Bolt.
 	ErrVersionMismatch = errors.New("version mismatch")
@@ -41,6 +44,10 @@ var (
 	// ErrDatabaseReadOnly is returned when a mutating transaction is started on a
 	// read-only database.
 	ErrDatabaseReadOnly = errors.New("database is in read-only mode")
+
+	// ErrFreePagesNotLoaded is returned when a readonly transaction without
+	// preloading the free pages is trying to access the free pages.
+	ErrFreePagesNotLoaded = errors.New("free pages are not pre-loaded")
 )
 
 // These errors can occur when putting or deleting a value or a bucket.
diff --git a/backend/vendor/go.etcd.io/bbolt/freelist.go b/backend/vendor/go.etcd.io/bbolt/freelist.go
index 697a4696..50f2d0e1 100644
--- a/backend/vendor/go.etcd.io/bbolt/freelist.go
+++ b/backend/vendor/go.etcd.io/bbolt/freelist.go
@@ -24,7 +24,7 @@ type freelist struct {
 	ids            []pgid                      // all free and available free page ids.
 	allocs         map[pgid]txid               // mapping of txid that allocated a pgid.
 	pending        map[txid]*txPending         // mapping of soon-to-be free page ids by tx.
-	cache          map[pgid]bool               // fast lookup of all free and pending page ids.
+	cache          map[pgid]struct{}           // fast lookup of all free and pending page ids.
 	freemaps       map[uint64]pidSet           // key is the size of continuous pages(span), value is a set which contains the starting pgids of same size
 	forwardMap     map[pgid]uint64             // key is start pgid, value is its span size
 	backwardMap    map[pgid]uint64             // key is end pgid, value is its span size
@@ -41,7 +41,7 @@ func newFreelist(freelistType FreelistType) *freelist {
 		freelistType: freelistType,
 		allocs:       make(map[pgid]txid),
 		pending:      make(map[txid]*txPending),
-		cache:        make(map[pgid]bool),
+		cache:        make(map[pgid]struct{}),
 		freemaps:     make(map[uint64]pidSet),
 		forwardMap:   make(map[pgid]uint64),
 		backwardMap:  make(map[pgid]uint64),
@@ -171,13 +171,13 @@ func (f *freelist) free(txid txid, p *page) {
 
 	for id := p.id; id <= p.id+pgid(p.overflow); id++ {
 		// Verify that page is not already free.
-		if f.cache[id] {
+		if _, ok := f.cache[id]; ok {
 			panic(fmt.Sprintf("page %d already freed", id))
 		}
 		// Add to the freelist and cache.
 		txp.ids = append(txp.ids, id)
 		txp.alloctx = append(txp.alloctx, allocTxid)
-		f.cache[id] = true
+		f.cache[id] = struct{}{}
 	}
 }
 
@@ -256,8 +256,9 @@ func (f *freelist) rollback(txid txid) {
 }
 
 // freed returns whether a given page is in the free list.
-func (f *freelist) freed(pgid pgid) bool {
-	return f.cache[pgid]
+func (f *freelist) freed(pgId pgid) bool {
+	_, ok := f.cache[pgId]
+	return ok
 }
 
 // read initializes the freelist from a freelist page.
@@ -386,13 +387,13 @@ func (f *freelist) noSyncReload(pgids []pgid) {
 // reindex rebuilds the free cache based on available and pending free lists.
 func (f *freelist) reindex() {
 	ids := f.getFreePageIDs()
-	f.cache = make(map[pgid]bool, len(ids))
+	f.cache = make(map[pgid]struct{}, len(ids))
 	for _, id := range ids {
-		f.cache[id] = true
+		f.cache[id] = struct{}{}
 	}
 	for _, txp := range f.pending {
 		for _, pendingID := range txp.ids {
-			f.cache[pendingID] = true
+			f.cache[pendingID] = struct{}{}
 		}
 	}
 }
diff --git a/backend/vendor/go.etcd.io/bbolt/mlock_unix.go b/backend/vendor/go.etcd.io/bbolt/mlock_unix.go
index 6a6c7b35..744a972f 100644
--- a/backend/vendor/go.etcd.io/bbolt/mlock_unix.go
+++ b/backend/vendor/go.etcd.io/bbolt/mlock_unix.go
@@ -1,3 +1,4 @@
+//go:build !windows
 // +build !windows
 
 package bbolt
@@ -17,7 +18,7 @@ func mlock(db *DB, fileSize int) error {
 	return nil
 }
 
-//munlock unlocks memory of db file
+// munlock unlocks memory of db file
 func munlock(db *DB, fileSize int) error {
 	if db.dataref == nil {
 		return nil
diff --git a/backend/vendor/go.etcd.io/bbolt/mlock_windows.go b/backend/vendor/go.etcd.io/bbolt/mlock_windows.go
index b4a36a49..00b0fb43 100644
--- a/backend/vendor/go.etcd.io/bbolt/mlock_windows.go
+++ b/backend/vendor/go.etcd.io/bbolt/mlock_windows.go
@@ -5,7 +5,7 @@ func mlock(_ *DB, _ int) error {
 	panic("mlock is supported only on UNIX systems")
 }
 
-//munlock unlocks memory of db file
+// munlock unlocks memory of db file
 func munlock(_ *DB, _ int) error {
 	panic("munlock is supported only on UNIX systems")
 }
diff --git a/backend/vendor/go.etcd.io/bbolt/node.go b/backend/vendor/go.etcd.io/bbolt/node.go
index 73988b5c..9c56150d 100644
--- a/backend/vendor/go.etcd.io/bbolt/node.go
+++ b/backend/vendor/go.etcd.io/bbolt/node.go
@@ -113,9 +113,9 @@ func (n *node) prevSibling() *node {
 }
 
 // put inserts a key/value.
-func (n *node) put(oldKey, newKey, value []byte, pgid pgid, flags uint32) {
-	if pgid >= n.bucket.tx.meta.pgid {
-		panic(fmt.Sprintf("pgid (%d) above high water mark (%d)", pgid, n.bucket.tx.meta.pgid))
+func (n *node) put(oldKey, newKey, value []byte, pgId pgid, flags uint32) {
+	if pgId >= n.bucket.tx.meta.pgid {
+		panic(fmt.Sprintf("pgId (%d) above high water mark (%d)", pgId, n.bucket.tx.meta.pgid))
 	} else if len(oldKey) <= 0 {
 		panic("put: zero-length old key")
 	} else if len(newKey) <= 0 {
@@ -136,7 +136,7 @@ func (n *node) put(oldKey, newKey, value []byte, pgid pgid, flags uint32) {
 	inode.flags = flags
 	inode.key = newKey
 	inode.value = value
-	inode.pgid = pgid
+	inode.pgid = pgId
 	_assert(len(inode.key) > 0, "put: zero-length inode key")
 }
 
@@ -188,12 +188,16 @@ func (n *node) read(p *page) {
 }
 
 // write writes the items onto one or more pages.
+// The page should have p.id (might be 0 for meta or bucket-inline page) and p.overflow set
+// and the rest should be zeroed.
 func (n *node) write(p *page) {
+	_assert(p.count == 0 && p.flags == 0, "node cannot be written into a not empty page")
+
 	// Initialize page.
 	if n.isLeaf {
-		p.flags |= leafPageFlag
+		p.flags = leafPageFlag
 	} else {
-		p.flags |= branchPageFlag
+		p.flags = branchPageFlag
 	}
 
 	if len(n.inodes) >= 0xFFFF {
@@ -300,7 +304,7 @@ func (n *node) splitTwo(pageSize uintptr) (*node, *node) {
 	n.inodes = n.inodes[:splitIndex]
 
 	// Update the statistics.
-	n.bucket.tx.stats.Split++
+	n.bucket.tx.stats.IncSplit(1)
 
 	return n, next
 }
@@ -387,7 +391,7 @@ func (n *node) spill() error {
 		}
 
 		// Update the statistics.
-		tx.stats.Spill++
+		tx.stats.IncSpill(1)
 	}
 
 	// If the root node split and created a new root then we need to spill that
@@ -409,7 +413,7 @@ func (n *node) rebalance() {
 	n.unbalanced = false
 
 	// Update statistics.
-	n.bucket.tx.stats.Rebalance++
+	n.bucket.tx.stats.IncRebalance(1)
 
 	// Ignore if node is above threshold (25%) and has enough keys.
 	var threshold = n.bucket.tx.db.pageSize / 4
@@ -543,7 +547,7 @@ func (n *node) dereference() {
 	}
 
 	// Update statistics.
-	n.bucket.tx.stats.NodeDeref++
+	n.bucket.tx.stats.IncNodeDeref(1)
 }
 
 // free adds the node's underlying page to the freelist.
@@ -581,6 +585,10 @@ func (n *node) dump() {
 }
 */
 
+func compareKeys(left, right []byte) int {
+	return bytes.Compare(left, right)
+}
+
 type nodes []*node
 
 func (s nodes) Len() int      { return len(s) }
diff --git a/backend/vendor/go.etcd.io/bbolt/page.go b/backend/vendor/go.etcd.io/bbolt/page.go
index c9a158fb..379645c9 100644
--- a/backend/vendor/go.etcd.io/bbolt/page.go
+++ b/backend/vendor/go.etcd.io/bbolt/page.go
@@ -53,6 +53,16 @@ func (p *page) meta() *meta {
 	return (*meta)(unsafeAdd(unsafe.Pointer(p), unsafe.Sizeof(*p)))
 }
 
+func (p *page) fastCheck(id pgid) {
+	_assert(p.id == id, "Page expected to be: %v, but self identifies as %v", id, p.id)
+	// Only one flag of page-type can be set.
+	_assert(p.flags == branchPageFlag ||
+		p.flags == leafPageFlag ||
+		p.flags == metaPageFlag ||
+		p.flags == freelistPageFlag,
+		"page %v: has unexpected type/flags: %x", p.id, p.flags)
+}
+
 // leafPageElement retrieves the leaf node by index
 func (p *page) leafPageElement(index uint16) *leafPageElement {
 	return (*leafPageElement)(unsafeIndex(unsafe.Pointer(p), unsafe.Sizeof(*p),
diff --git a/backend/vendor/go.etcd.io/bbolt/tx.go b/backend/vendor/go.etcd.io/bbolt/tx.go
index 869d4120..2fac8c0a 100644
--- a/backend/vendor/go.etcd.io/bbolt/tx.go
+++ b/backend/vendor/go.etcd.io/bbolt/tx.go
@@ -6,6 +6,7 @@ import (
 	"os"
 	"sort"
 	"strings"
+	"sync/atomic"
 	"time"
 	"unsafe"
 )
@@ -151,17 +152,19 @@ func (tx *Tx) Commit() error {
 	// Rebalance nodes which have had deletions.
 	var startTime = time.Now()
 	tx.root.rebalance()
-	if tx.stats.Rebalance > 0 {
-		tx.stats.RebalanceTime += time.Since(startTime)
+	if tx.stats.GetRebalance() > 0 {
+		tx.stats.IncRebalanceTime(time.Since(startTime))
 	}
 
+	opgid := tx.meta.pgid
+
 	// spill data onto dirty pages.
 	startTime = time.Now()
 	if err := tx.root.spill(); err != nil {
 		tx.rollback()
 		return err
 	}
-	tx.stats.SpillTime += time.Since(startTime)
+	tx.stats.IncSpillTime(time.Since(startTime))
 
 	// Free the old root bucket.
 	tx.meta.root.root = tx.root.root
@@ -180,6 +183,14 @@ func (tx *Tx) Commit() error {
 		tx.meta.freelist = pgidNoFreelist
 	}
 
+	// If the high water mark has moved up then attempt to grow the database.
+	if tx.meta.pgid > opgid {
+		if err := tx.db.grow(int(tx.meta.pgid+1) * tx.db.pageSize); err != nil {
+			tx.rollback()
+			return err
+		}
+	}
+
 	// Write dirty pages to disk.
 	startTime = time.Now()
 	if err := tx.write(); err != nil {
@@ -208,7 +219,7 @@ func (tx *Tx) Commit() error {
 		tx.rollback()
 		return err
 	}
-	tx.stats.WriteTime += time.Since(startTime)
+	tx.stats.IncWriteTime(time.Since(startTime))
 
 	// Finalize the transaction.
 	tx.close()
@@ -224,7 +235,6 @@ func (tx *Tx) Commit() error {
 func (tx *Tx) commitFreelist() error {
 	// Allocate new pages for the new free list. This will overestimate
 	// the size of the freelist but not underestimate the size (which would be bad).
-	opgid := tx.meta.pgid
 	p, err := tx.allocate((tx.db.freelist.size() / tx.db.pageSize) + 1)
 	if err != nil {
 		tx.rollback()
@@ -235,13 +245,6 @@ func (tx *Tx) commitFreelist() error {
 		return err
 	}
 	tx.meta.freelist = p.id
-	// If the high water mark has moved up then attempt to grow the database.
-	if tx.meta.pgid > opgid {
-		if err := tx.db.grow(int(tx.meta.pgid+1) * tx.db.pageSize); err != nil {
-			tx.rollback()
-			return err
-		}
-	}
 
 	return nil
 }
@@ -275,13 +278,17 @@ func (tx *Tx) rollback() {
 	}
 	if tx.writable {
 		tx.db.freelist.rollback(tx.meta.txid)
-		if !tx.db.hasSyncedFreelist() {
-			// Reconstruct free page list by scanning the DB to get the whole free page list.
-			// Note: scaning the whole db is heavy if your db size is large in NoSyncFreeList mode.
-			tx.db.freelist.noSyncReload(tx.db.freepages())
-		} else {
-			// Read free page list from freelist page.
-			tx.db.freelist.reload(tx.db.page(tx.db.meta().freelist))
+		// When mmap fails, the `data`, `dataref` and `datasz` may be reset to
+		// zero values, and there is no way to reload free page IDs in this case.
+		if tx.db.data != nil {
+			if !tx.db.hasSyncedFreelist() {
+				// Reconstruct free page list by scanning the DB to get the whole free page list.
+				// Note: scaning the whole db is heavy if your db size is large in NoSyncFreeList mode.
+				tx.db.freelist.noSyncReload(tx.db.freepages())
+			} else {
+				// Read free page list from freelist page.
+				tx.db.freelist.reload(tx.db.page(tx.db.meta().freelist))
+			}
 		}
 	}
 	tx.close()
@@ -400,98 +407,6 @@ func (tx *Tx) CopyFile(path string, mode os.FileMode) error {
 	return f.Close()
 }
 
-// Check performs several consistency checks on the database for this transaction.
-// An error is returned if any inconsistency is found.
-//
-// It can be safely run concurrently on a writable transaction. However, this
-// incurs a high cost for large databases and databases with a lot of subbuckets
-// because of caching. This overhead can be removed if running on a read-only
-// transaction, however, it is not safe to execute other writer transactions at
-// the same time.
-func (tx *Tx) Check() <-chan error {
-	ch := make(chan error)
-	go tx.check(ch)
-	return ch
-}
-
-func (tx *Tx) check(ch chan error) {
-	// Force loading free list if opened in ReadOnly mode.
-	tx.db.loadFreelist()
-
-	// Check if any pages are double freed.
-	freed := make(map[pgid]bool)
-	all := make([]pgid, tx.db.freelist.count())
-	tx.db.freelist.copyall(all)
-	for _, id := range all {
-		if freed[id] {
-			ch <- fmt.Errorf("page %d: already freed", id)
-		}
-		freed[id] = true
-	}
-
-	// Track every reachable page.
-	reachable := make(map[pgid]*page)
-	reachable[0] = tx.page(0) // meta0
-	reachable[1] = tx.page(1) // meta1
-	if tx.meta.freelist != pgidNoFreelist {
-		for i := uint32(0); i <= tx.page(tx.meta.freelist).overflow; i++ {
-			reachable[tx.meta.freelist+pgid(i)] = tx.page(tx.meta.freelist)
-		}
-	}
-
-	// Recursively check buckets.
-	tx.checkBucket(&tx.root, reachable, freed, ch)
-
-	// Ensure all pages below high water mark are either reachable or freed.
-	for i := pgid(0); i < tx.meta.pgid; i++ {
-		_, isReachable := reachable[i]
-		if !isReachable && !freed[i] {
-			ch <- fmt.Errorf("page %d: unreachable unfreed", int(i))
-		}
-	}
-
-	// Close the channel to signal completion.
-	close(ch)
-}
-
-func (tx *Tx) checkBucket(b *Bucket, reachable map[pgid]*page, freed map[pgid]bool, ch chan error) {
-	// Ignore inline buckets.
-	if b.root == 0 {
-		return
-	}
-
-	// Check every page used by this bucket.
-	b.tx.forEachPage(b.root, 0, func(p *page, _ int) {
-		if p.id > tx.meta.pgid {
-			ch <- fmt.Errorf("page %d: out of bounds: %d", int(p.id), int(b.tx.meta.pgid))
-		}
-
-		// Ensure each page is only referenced once.
-		for i := pgid(0); i <= pgid(p.overflow); i++ {
-			var id = p.id + i
-			if _, ok := reachable[id]; ok {
-				ch <- fmt.Errorf("page %d: multiple references", int(id))
-			}
-			reachable[id] = p
-		}
-
-		// We should only encounter un-freed leaf and branch pages.
-		if freed[p.id] {
-			ch <- fmt.Errorf("page %d: reachable freed", int(p.id))
-		} else if (p.flags&branchPageFlag) == 0 && (p.flags&leafPageFlag) == 0 {
-			ch <- fmt.Errorf("page %d: invalid type: %s", int(p.id), p.typ())
-		}
-	})
-
-	// Check each bucket within this bucket.
-	_ = b.ForEach(func(k, v []byte) error {
-		if child := b.Bucket(k); child != nil {
-			tx.checkBucket(child, reachable, freed, ch)
-		}
-		return nil
-	})
-}
-
 // allocate returns a contiguous block of memory starting at a given page.
 func (tx *Tx) allocate(count int) (*page, error) {
 	p, err := tx.db.allocate(tx.meta.txid, count)
@@ -503,8 +418,8 @@ func (tx *Tx) allocate(count int) (*page, error) {
 	tx.pages[p.id] = p
 
 	// Update statistics.
-	tx.stats.PageCount += count
-	tx.stats.PageAlloc += count * tx.db.pageSize
+	tx.stats.IncPageCount(int64(count))
+	tx.stats.IncPageAlloc(int64(count * tx.db.pageSize))
 
 	return p, nil
 }
@@ -539,7 +454,7 @@ func (tx *Tx) write() error {
 			}
 
 			// Update statistics.
-			tx.stats.Write++
+			tx.stats.IncWrite(1)
 
 			// Exit inner for loop if we've written all the chunks.
 			rem -= sz
@@ -574,7 +489,7 @@ func (tx *Tx) write() error {
 		for i := range buf {
 			buf[i] = 0
 		}
-		tx.db.pagePool.Put(buf)
+		tx.db.pagePool.Put(buf) //nolint:staticcheck
 	}
 
 	return nil
@@ -598,7 +513,7 @@ func (tx *Tx) writeMeta() error {
 	}
 
 	// Update statistics.
-	tx.stats.Write++
+	tx.stats.IncWrite(1)
 
 	return nil
 }
@@ -609,26 +524,35 @@ func (tx *Tx) page(id pgid) *page {
 	// Check the dirty pages first.
 	if tx.pages != nil {
 		if p, ok := tx.pages[id]; ok {
+			p.fastCheck(id)
 			return p
 		}
 	}
 
 	// Otherwise return directly from the mmap.
-	return tx.db.page(id)
+	p := tx.db.page(id)
+	p.fastCheck(id)
+	return p
 }
 
 // forEachPage iterates over every page within a given page and executes a function.
-func (tx *Tx) forEachPage(pgid pgid, depth int, fn func(*page, int)) {
-	p := tx.page(pgid)
+func (tx *Tx) forEachPage(pgidnum pgid, fn func(*page, int, []pgid)) {
+	stack := make([]pgid, 10)
+	stack[0] = pgidnum
+	tx.forEachPageInternal(stack[:1], fn)
+}
+
+func (tx *Tx) forEachPageInternal(pgidstack []pgid, fn func(*page, int, []pgid)) {
+	p := tx.page(pgidstack[len(pgidstack)-1])
 
 	// Execute function.
-	fn(p, depth)
+	fn(p, len(pgidstack)-1, pgidstack)
 
 	// Recursively loop over children.
 	if (p.flags & branchPageFlag) != 0 {
 		for i := 0; i < int(p.count); i++ {
 			elem := p.branchPageElement(uint16(i))
-			tx.forEachPage(elem.pgid, depth+1, fn)
+			tx.forEachPageInternal(append(pgidstack, elem.pgid), fn)
 		}
 	}
 }
@@ -642,6 +566,10 @@ func (tx *Tx) Page(id int) (*PageInfo, error) {
 		return nil, nil
 	}
 
+	if tx.db.freelist == nil {
+		return nil, ErrFreePagesNotLoaded
+	}
+
 	// Build the page info.
 	p := tx.db.page(pgid(id))
 	info := &PageInfo{
@@ -663,43 +591,61 @@ func (tx *Tx) Page(id int) (*PageInfo, error) {
 // TxStats represents statistics about the actions performed by the transaction.
 type TxStats struct {
 	// Page statistics.
-	PageCount int // number of page allocations
-	PageAlloc int // total bytes allocated
+	//
+	// DEPRECATED: Use GetPageCount() or IncPageCount()
+	PageCount int64 // number of page allocations
+	// DEPRECATED: Use GetPageAlloc() or IncPageAlloc()
+	PageAlloc int64 // total bytes allocated
 
 	// Cursor statistics.
-	CursorCount int // number of cursors created
+	//
+	// DEPRECATED: Use GetCursorCount() or IncCursorCount()
+	CursorCount int64 // number of cursors created
 
 	// Node statistics
-	NodeCount int // number of node allocations
-	NodeDeref int // number of node dereferences
+	//
+	// DEPRECATED: Use GetNodeCount() or IncNodeCount()
+	NodeCount int64 // number of node allocations
+	// DEPRECATED: Use GetNodeDeref() or IncNodeDeref()
+	NodeDeref int64 // number of node dereferences
 
 	// Rebalance statistics.
-	Rebalance     int           // number of node rebalances
+	//
+	// DEPRECATED: Use GetRebalance() or IncRebalance()
+	Rebalance int64 // number of node rebalances
+	// DEPRECATED: Use GetRebalanceTime() or IncRebalanceTime()
 	RebalanceTime time.Duration // total time spent rebalancing
 
 	// Split/Spill statistics.
-	Split     int           // number of nodes split
-	Spill     int           // number of nodes spilled
+	//
+	// DEPRECATED: Use GetSplit() or IncSplit()
+	Split int64 // number of nodes split
+	// DEPRECATED: Use GetSpill() or IncSpill()
+	Spill int64 // number of nodes spilled
+	// DEPRECATED: Use GetSpillTime() or IncSpillTime()
 	SpillTime time.Duration // total time spent spilling
 
 	// Write statistics.
-	Write     int           // number of writes performed
+	//
+	// DEPRECATED: Use GetWrite() or IncWrite()
+	Write int64 // number of writes performed
+	// DEPRECATED: Use GetWriteTime() or IncWriteTime()
 	WriteTime time.Duration // total time spent writing to disk
 }
 
 func (s *TxStats) add(other *TxStats) {
-	s.PageCount += other.PageCount
-	s.PageAlloc += other.PageAlloc
-	s.CursorCount += other.CursorCount
-	s.NodeCount += other.NodeCount
-	s.NodeDeref += other.NodeDeref
-	s.Rebalance += other.Rebalance
-	s.RebalanceTime += other.RebalanceTime
-	s.Split += other.Split
-	s.Spill += other.Spill
-	s.SpillTime += other.SpillTime
-	s.Write += other.Write
-	s.WriteTime += other.WriteTime
+	s.IncPageCount(other.GetPageCount())
+	s.IncPageAlloc(other.GetPageAlloc())
+	s.IncCursorCount(other.GetCursorCount())
+	s.IncNodeCount(other.GetNodeCount())
+	s.IncNodeDeref(other.GetNodeDeref())
+	s.IncRebalance(other.GetRebalance())
+	s.IncRebalanceTime(other.GetRebalanceTime())
+	s.IncSplit(other.GetSplit())
+	s.IncSpill(other.GetSpill())
+	s.IncSpillTime(other.GetSpillTime())
+	s.IncWrite(other.GetWrite())
+	s.IncWriteTime(other.GetWriteTime())
 }
 
 // Sub calculates and returns the difference between two sets of transaction stats.
@@ -707,17 +653,145 @@ func (s *TxStats) add(other *TxStats) {
 // you need the performance counters that occurred within that time span.
 func (s *TxStats) Sub(other *TxStats) TxStats {
 	var diff TxStats
-	diff.PageCount = s.PageCount - other.PageCount
-	diff.PageAlloc = s.PageAlloc - other.PageAlloc
-	diff.CursorCount = s.CursorCount - other.CursorCount
-	diff.NodeCount = s.NodeCount - other.NodeCount
-	diff.NodeDeref = s.NodeDeref - other.NodeDeref
-	diff.Rebalance = s.Rebalance - other.Rebalance
-	diff.RebalanceTime = s.RebalanceTime - other.RebalanceTime
-	diff.Split = s.Split - other.Split
-	diff.Spill = s.Spill - other.Spill
-	diff.SpillTime = s.SpillTime - other.SpillTime
-	diff.Write = s.Write - other.Write
-	diff.WriteTime = s.WriteTime - other.WriteTime
+	diff.PageCount = s.GetPageCount() - other.GetPageCount()
+	diff.PageAlloc = s.GetPageAlloc() - other.GetPageAlloc()
+	diff.CursorCount = s.GetCursorCount() - other.GetCursorCount()
+	diff.NodeCount = s.GetNodeCount() - other.GetNodeCount()
+	diff.NodeDeref = s.GetNodeDeref() - other.GetNodeDeref()
+	diff.Rebalance = s.GetRebalance() - other.GetRebalance()
+	diff.RebalanceTime = s.GetRebalanceTime() - other.GetRebalanceTime()
+	diff.Split = s.GetSplit() - other.GetSplit()
+	diff.Spill = s.GetSpill() - other.GetSpill()
+	diff.SpillTime = s.GetSpillTime() - other.GetSpillTime()
+	diff.Write = s.GetWrite() - other.GetWrite()
+	diff.WriteTime = s.GetWriteTime() - other.GetWriteTime()
 	return diff
 }
+
+// GetPageCount returns PageCount atomically.
+func (s *TxStats) GetPageCount() int64 {
+	return atomic.LoadInt64(&s.PageCount)
+}
+
+// IncPageCount increases PageCount atomically and returns the new value.
+func (s *TxStats) IncPageCount(delta int64) int64 {
+	return atomic.AddInt64(&s.PageCount, delta)
+}
+
+// GetPageAlloc returns PageAlloc atomically.
+func (s *TxStats) GetPageAlloc() int64 {
+	return atomic.LoadInt64(&s.PageAlloc)
+}
+
+// IncPageAlloc increases PageAlloc atomically and returns the new value.
+func (s *TxStats) IncPageAlloc(delta int64) int64 {
+	return atomic.AddInt64(&s.PageAlloc, delta)
+}
+
+// GetCursorCount returns CursorCount atomically.
+func (s *TxStats) GetCursorCount() int64 {
+	return atomic.LoadInt64(&s.CursorCount)
+}
+
+// IncCursorCount increases CursorCount atomically and return the new value.
+func (s *TxStats) IncCursorCount(delta int64) int64 {
+	return atomic.AddInt64(&s.CursorCount, delta)
+}
+
+// GetNodeCount returns NodeCount atomically.
+func (s *TxStats) GetNodeCount() int64 {
+	return atomic.LoadInt64(&s.NodeCount)
+}
+
+// IncNodeCount increases NodeCount atomically and returns the new value.
+func (s *TxStats) IncNodeCount(delta int64) int64 {
+	return atomic.AddInt64(&s.NodeCount, delta)
+}
+
+// GetNodeDeref returns NodeDeref atomically.
+func (s *TxStats) GetNodeDeref() int64 {
+	return atomic.LoadInt64(&s.NodeDeref)
+}
+
+// IncNodeDeref increases NodeDeref atomically and returns the new value.
+func (s *TxStats) IncNodeDeref(delta int64) int64 {
+	return atomic.AddInt64(&s.NodeDeref, delta)
+}
+
+// GetRebalance returns Rebalance atomically.
+func (s *TxStats) GetRebalance() int64 {
+	return atomic.LoadInt64(&s.Rebalance)
+}
+
+// IncRebalance increases Rebalance atomically and returns the new value.
+func (s *TxStats) IncRebalance(delta int64) int64 {
+	return atomic.AddInt64(&s.Rebalance, delta)
+}
+
+// GetRebalanceTime returns RebalanceTime atomically.
+func (s *TxStats) GetRebalanceTime() time.Duration {
+	return atomicLoadDuration(&s.RebalanceTime)
+}
+
+// IncRebalanceTime increases RebalanceTime atomically and returns the new value.
+func (s *TxStats) IncRebalanceTime(delta time.Duration) time.Duration {
+	return atomicAddDuration(&s.RebalanceTime, delta)
+}
+
+// GetSplit returns Split atomically.
+func (s *TxStats) GetSplit() int64 {
+	return atomic.LoadInt64(&s.Split)
+}
+
+// IncSplit increases Split atomically and returns the new value.
+func (s *TxStats) IncSplit(delta int64) int64 {
+	return atomic.AddInt64(&s.Split, delta)
+}
+
+// GetSpill returns Spill atomically.
+func (s *TxStats) GetSpill() int64 {
+	return atomic.LoadInt64(&s.Spill)
+}
+
+// IncSpill increases Spill atomically and returns the new value.
+func (s *TxStats) IncSpill(delta int64) int64 {
+	return atomic.AddInt64(&s.Spill, delta)
+}
+
+// GetSpillTime returns SpillTime atomically.
+func (s *TxStats) GetSpillTime() time.Duration {
+	return atomicLoadDuration(&s.SpillTime)
+}
+
+// IncSpillTime increases SpillTime atomically and returns the new value.
+func (s *TxStats) IncSpillTime(delta time.Duration) time.Duration {
+	return atomicAddDuration(&s.SpillTime, delta)
+}
+
+// GetWrite returns Write atomically.
+func (s *TxStats) GetWrite() int64 {
+	return atomic.LoadInt64(&s.Write)
+}
+
+// IncWrite increases Write atomically and returns the new value.
+func (s *TxStats) IncWrite(delta int64) int64 {
+	return atomic.AddInt64(&s.Write, delta)
+}
+
+// GetWriteTime returns WriteTime atomically.
+func (s *TxStats) GetWriteTime() time.Duration {
+	return atomicLoadDuration(&s.WriteTime)
+}
+
+// IncWriteTime increases WriteTime atomically and returns the new value.
+func (s *TxStats) IncWriteTime(delta time.Duration) time.Duration {
+	return atomicAddDuration(&s.WriteTime, delta)
+}
+
+func atomicAddDuration(ptr *time.Duration, du time.Duration) time.Duration {
+	return time.Duration(atomic.AddInt64((*int64)(unsafe.Pointer(ptr)), int64(du)))
+}
+
+func atomicLoadDuration(ptr *time.Duration) time.Duration {
+	return time.Duration(atomic.LoadInt64((*int64)(unsafe.Pointer(ptr))))
+}
diff --git a/backend/vendor/go.etcd.io/bbolt/tx_check.go b/backend/vendor/go.etcd.io/bbolt/tx_check.go
new file mode 100644
index 00000000..75c7c084
--- /dev/null
+++ b/backend/vendor/go.etcd.io/bbolt/tx_check.go
@@ -0,0 +1,226 @@
+package bbolt
+
+import (
+	"encoding/hex"
+	"fmt"
+)
+
+// Check performs several consistency checks on the database for this transaction.
+// An error is returned if any inconsistency is found.
+//
+// It can be safely run concurrently on a writable transaction. However, this
+// incurs a high cost for large databases and databases with a lot of subbuckets
+// because of caching. This overhead can be removed if running on a read-only
+// transaction, however, it is not safe to execute other writer transactions at
+// the same time.
+func (tx *Tx) Check() <-chan error {
+	return tx.CheckWithOptions()
+}
+
+// CheckWithOptions allows users to provide a customized `KVStringer` implementation,
+// so that bolt can generate human-readable diagnostic messages.
+func (tx *Tx) CheckWithOptions(options ...CheckOption) <-chan error {
+	chkConfig := checkConfig{
+		kvStringer: HexKVStringer(),
+	}
+	for _, op := range options {
+		op(&chkConfig)
+	}
+
+	ch := make(chan error)
+	go tx.check(chkConfig.kvStringer, ch)
+	return ch
+}
+
+func (tx *Tx) check(kvStringer KVStringer, ch chan error) {
+	// Force loading free list if opened in ReadOnly mode.
+	tx.db.loadFreelist()
+
+	// Check if any pages are double freed.
+	freed := make(map[pgid]bool)
+	all := make([]pgid, tx.db.freelist.count())
+	tx.db.freelist.copyall(all)
+	for _, id := range all {
+		if freed[id] {
+			ch <- fmt.Errorf("page %d: already freed", id)
+		}
+		freed[id] = true
+	}
+
+	// Track every reachable page.
+	reachable := make(map[pgid]*page)
+	reachable[0] = tx.page(0) // meta0
+	reachable[1] = tx.page(1) // meta1
+	if tx.meta.freelist != pgidNoFreelist {
+		for i := uint32(0); i <= tx.page(tx.meta.freelist).overflow; i++ {
+			reachable[tx.meta.freelist+pgid(i)] = tx.page(tx.meta.freelist)
+		}
+	}
+
+	// Recursively check buckets.
+	tx.checkBucket(&tx.root, reachable, freed, kvStringer, ch)
+
+	// Ensure all pages below high water mark are either reachable or freed.
+	for i := pgid(0); i < tx.meta.pgid; i++ {
+		_, isReachable := reachable[i]
+		if !isReachable && !freed[i] {
+			ch <- fmt.Errorf("page %d: unreachable unfreed", int(i))
+		}
+	}
+
+	// Close the channel to signal completion.
+	close(ch)
+}
+
+func (tx *Tx) checkBucket(b *Bucket, reachable map[pgid]*page, freed map[pgid]bool,
+	kvStringer KVStringer, ch chan error) {
+	// Ignore inline buckets.
+	if b.root == 0 {
+		return
+	}
+
+	// Check every page used by this bucket.
+	b.tx.forEachPage(b.root, func(p *page, _ int, stack []pgid) {
+		if p.id > tx.meta.pgid {
+			ch <- fmt.Errorf("page %d: out of bounds: %d (stack: %v)", int(p.id), int(b.tx.meta.pgid), stack)
+		}
+
+		// Ensure each page is only referenced once.
+		for i := pgid(0); i <= pgid(p.overflow); i++ {
+			var id = p.id + i
+			if _, ok := reachable[id]; ok {
+				ch <- fmt.Errorf("page %d: multiple references (stack: %v)", int(id), stack)
+			}
+			reachable[id] = p
+		}
+
+		// We should only encounter un-freed leaf and branch pages.
+		if freed[p.id] {
+			ch <- fmt.Errorf("page %d: reachable freed", int(p.id))
+		} else if (p.flags&branchPageFlag) == 0 && (p.flags&leafPageFlag) == 0 {
+			ch <- fmt.Errorf("page %d: invalid type: %s (stack: %v)", int(p.id), p.typ(), stack)
+		}
+	})
+
+	tx.recursivelyCheckPages(b.root, kvStringer.KeyToString, ch)
+
+	// Check each bucket within this bucket.
+	_ = b.ForEachBucket(func(k []byte) error {
+		if child := b.Bucket(k); child != nil {
+			tx.checkBucket(child, reachable, freed, kvStringer, ch)
+		}
+		return nil
+	})
+}
+
+// recursivelyCheckPages confirms database consistency with respect to b-tree
+// key order constraints:
+//   - keys on pages must be sorted
+//   - keys on children pages are between 2 consecutive keys on the parent's branch page).
+func (tx *Tx) recursivelyCheckPages(pgId pgid, keyToString func([]byte) string, ch chan error) {
+	tx.recursivelyCheckPagesInternal(pgId, nil, nil, nil, keyToString, ch)
+}
+
+// recursivelyCheckPagesInternal verifies that all keys in the subtree rooted at `pgid` are:
+//   - >=`minKeyClosed` (can be nil)
+//   - <`maxKeyOpen` (can be nil)
+//   - Are in right ordering relationship to their parents.
+//     `pagesStack` is expected to contain IDs of pages from the tree root to `pgid` for the clean debugging message.
+func (tx *Tx) recursivelyCheckPagesInternal(
+	pgId pgid, minKeyClosed, maxKeyOpen []byte, pagesStack []pgid,
+	keyToString func([]byte) string, ch chan error) (maxKeyInSubtree []byte) {
+
+	p := tx.page(pgId)
+	pagesStack = append(pagesStack, pgId)
+	switch {
+	case p.flags&branchPageFlag != 0:
+		// For branch page we navigate ranges of all subpages.
+		runningMin := minKeyClosed
+		for i := range p.branchPageElements() {
+			elem := p.branchPageElement(uint16(i))
+			verifyKeyOrder(elem.pgid, "branch", i, elem.key(), runningMin, maxKeyOpen, ch, keyToString, pagesStack)
+
+			maxKey := maxKeyOpen
+			if i < len(p.branchPageElements())-1 {
+				maxKey = p.branchPageElement(uint16(i + 1)).key()
+			}
+			maxKeyInSubtree = tx.recursivelyCheckPagesInternal(elem.pgid, elem.key(), maxKey, pagesStack, keyToString, ch)
+			runningMin = maxKeyInSubtree
+		}
+		return maxKeyInSubtree
+	case p.flags&leafPageFlag != 0:
+		runningMin := minKeyClosed
+		for i := range p.leafPageElements() {
+			elem := p.leafPageElement(uint16(i))
+			verifyKeyOrder(pgId, "leaf", i, elem.key(), runningMin, maxKeyOpen, ch, keyToString, pagesStack)
+			runningMin = elem.key()
+		}
+		if p.count > 0 {
+			return p.leafPageElement(p.count - 1).key()
+		}
+	default:
+		ch <- fmt.Errorf("unexpected page type for pgId:%d", pgId)
+	}
+	return maxKeyInSubtree
+}
+
+/***
+ * verifyKeyOrder checks whether an entry with given #index on pgId (pageType: "branch|leaf") that has given "key",
+ * is within range determined by (previousKey..maxKeyOpen) and reports found violations to the channel (ch).
+ */
+func verifyKeyOrder(pgId pgid, pageType string, index int, key []byte, previousKey []byte, maxKeyOpen []byte, ch chan error, keyToString func([]byte) string, pagesStack []pgid) {
+	if index == 0 && previousKey != nil && compareKeys(previousKey, key) > 0 {
+		ch <- fmt.Errorf("the first key[%d]=(hex)%s on %s page(%d) needs to be >= the key in the ancestor (%s). Stack: %v",
+			index, keyToString(key), pageType, pgId, keyToString(previousKey), pagesStack)
+	}
+	if index > 0 {
+		cmpRet := compareKeys(previousKey, key)
+		if cmpRet > 0 {
+			ch <- fmt.Errorf("key[%d]=(hex)%s on %s page(%d) needs to be > (found <) than previous element (hex)%s. Stack: %v",
+				index, keyToString(key), pageType, pgId, keyToString(previousKey), pagesStack)
+		}
+		if cmpRet == 0 {
+			ch <- fmt.Errorf("key[%d]=(hex)%s on %s page(%d) needs to be > (found =) than previous element (hex)%s. Stack: %v",
+				index, keyToString(key), pageType, pgId, keyToString(previousKey), pagesStack)
+		}
+	}
+	if maxKeyOpen != nil && compareKeys(key, maxKeyOpen) >= 0 {
+		ch <- fmt.Errorf("key[%d]=(hex)%s on %s page(%d) needs to be < than key of the next element in ancestor (hex)%s. Pages stack: %v",
+			index, keyToString(key), pageType, pgId, keyToString(previousKey), pagesStack)
+	}
+}
+
+// ===========================================================================================
+
+type checkConfig struct {
+	kvStringer KVStringer
+}
+
+type CheckOption func(options *checkConfig)
+
+func WithKVStringer(kvStringer KVStringer) CheckOption {
+	return func(c *checkConfig) {
+		c.kvStringer = kvStringer
+	}
+}
+
+// KVStringer allows to prepare human-readable diagnostic messages.
+type KVStringer interface {
+	KeyToString([]byte) string
+	ValueToString([]byte) string
+}
+
+// HexKVStringer serializes both key & value to hex representation.
+func HexKVStringer() KVStringer {
+	return hexKvStringer{}
+}
+
+type hexKvStringer struct{}
+
+func (_ hexKvStringer) KeyToString(key []byte) string {
+	return hex.EncodeToString(key)
+}
+
+func (_ hexKvStringer) ValueToString(value []byte) string {
+	return hex.EncodeToString(value)
+}
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/mongo/change_stream.go b/backend/vendor/go.mongodb.org/mongo-driver/mongo/change_stream.go
index 82d2b579..bbdc6174 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/mongo/change_stream.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/mongo/change_stream.go
@@ -119,10 +119,7 @@ func newChangeStream(ctx context.Context, config changeStreamConfig, pipeline in
 
 	cs.sess = sessionFromContext(ctx)
 	if cs.sess == nil && cs.client.sessionPool != nil {
-		cs.sess, cs.err = session.NewClientSession(cs.client.sessionPool, cs.client.id, session.Implicit)
-		if cs.err != nil {
-			return nil, cs.Err()
-		}
+		cs.sess = session.NewImplicitClientSession(cs.client.sessionPool, cs.client.id)
 	}
 	if cs.err = cs.client.validSession(cs.sess); cs.err != nil {
 		closeImplicitSession(cs.sess)
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/mongo/client.go b/backend/vendor/go.mongodb.org/mongo-driver/mongo/client.go
index d80fd1d5..b3866374 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/mongo/client.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/mongo/client.go
@@ -387,7 +387,7 @@ func (c *Client) StartSession(opts ...*options.SessionOptions) (Session, error)
 		coreOpts.Snapshot = sopts.Snapshot
 	}
 
-	sess, err := session.NewClientSession(c.sessionPool, c.id, session.Explicit, coreOpts)
+	sess, err := session.NewClientSession(c.sessionPool, c.id, coreOpts)
 	if err != nil {
 		return nil, replaceErrors(err)
 	}
@@ -648,10 +648,7 @@ func (c *Client) ListDatabases(ctx context.Context, filter interface{}, opts ...
 		return ListDatabasesResult{}, err
 	}
 	if sess == nil && c.sessionPool != nil {
-		sess, err = session.NewClientSession(c.sessionPool, c.id, session.Implicit)
-		if err != nil {
-			return ListDatabasesResult{}, err
-		}
+		sess = session.NewImplicitClientSession(c.sessionPool, c.id)
 		defer sess.EndSession()
 	}
 
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/mongo/collection.go b/backend/vendor/go.mongodb.org/mongo-driver/mongo/collection.go
index 2a697064..547110ea 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/mongo/collection.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/mongo/collection.go
@@ -59,7 +59,7 @@ type aggregateParams struct {
 }
 
 func closeImplicitSession(sess *session.Client) {
-	if sess != nil && sess.SessionType == session.Implicit {
+	if sess != nil && sess.IsImplicit {
 		sess.EndSession()
 	}
 }
@@ -187,11 +187,7 @@ func (coll *Collection) BulkWrite(ctx context.Context, models []WriteModel,
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && coll.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 
@@ -255,11 +251,7 @@ func (coll *Collection) insert(ctx context.Context, documents []interface{},
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && coll.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 
@@ -415,10 +407,7 @@ func (coll *Collection) delete(ctx context.Context, filter interface{}, deleteOn
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && coll.client.sessionPool != nil {
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 
@@ -546,11 +535,7 @@ func (coll *Collection) updateOrReplace(ctx context.Context, filter bsoncore.Doc
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && coll.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 
@@ -801,10 +786,7 @@ func aggregate(a aggregateParams) (cur *Cursor, err error) {
 		}
 	}()
 	if sess == nil && a.client.sessionPool != nil {
-		sess, err = session.NewClientSession(a.client.sessionPool, a.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(a.client.sessionPool, a.client.id)
 	}
 	if err = a.client.validSession(sess); err != nil {
 		return nil, err
@@ -950,10 +932,7 @@ func (coll *Collection) CountDocuments(ctx context.Context, filter interface{},
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && coll.client.sessionPool != nil {
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return 0, err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 	if err = coll.client.validSession(sess); err != nil {
@@ -1030,10 +1009,7 @@ func (coll *Collection) EstimatedDocumentCount(ctx context.Context,
 
 	var err error
 	if sess == nil && coll.client.sessionPool != nil {
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return 0, err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 
@@ -1099,10 +1075,7 @@ func (coll *Collection) Distinct(ctx context.Context, fieldName string, filter i
 	sess := sessionFromContext(ctx)
 
 	if sess == nil && coll.client.sessionPool != nil {
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 
@@ -1198,11 +1171,7 @@ func (coll *Collection) Find(ctx context.Context, filter interface{},
 		}
 	}()
 	if sess == nil && coll.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 	}
 
 	err = coll.client.validSession(sess)
@@ -1404,10 +1373,7 @@ func (coll *Collection) findAndModify(ctx context.Context, op *operation.FindAnd
 	sess := sessionFromContext(ctx)
 	var err error
 	if sess == nil && coll.client.sessionPool != nil {
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return &SingleResult{err: err}
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 
@@ -1797,11 +1763,7 @@ func (coll *Collection) drop(ctx context.Context) error {
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && coll.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(coll.client.sessionPool, coll.client.id, session.Implicit)
-		if err != nil {
-			return err
-		}
+		sess = session.NewImplicitClientSession(coll.client.sessionPool, coll.client.id)
 		defer sess.EndSession()
 	}
 
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/mongo/cursor.go b/backend/vendor/go.mongodb.org/mongo-driver/mongo/cursor.go
index 99f86951..9b0b7034 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/mongo/cursor.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/mongo/cursor.go
@@ -309,7 +309,7 @@ func (c *Cursor) addFromBatch(sliceVal reflect.Value, elemType reflect.Type, bat
 }
 
 func (c *Cursor) closeImplicitSession() {
-	if c.clientSession != nil && c.clientSession.SessionType == session.Implicit {
+	if c.clientSession != nil && c.clientSession.IsImplicit {
 		c.clientSession.EndSession()
 	}
 }
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/mongo/database.go b/backend/vendor/go.mongodb.org/mongo-driver/mongo/database.go
index cd93fb86..415537d5 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/mongo/database.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/mongo/database.go
@@ -136,11 +136,7 @@ func (db *Database) processRunCommand(ctx context.Context, cmd interface{},
 	cursorCommand bool, opts ...*options.RunCmdOptions) (*operation.Command, *session.Client, error) {
 	sess := sessionFromContext(ctx)
 	if sess == nil && db.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(db.client.sessionPool, db.client.id, session.Implicit)
-		if err != nil {
-			return nil, sess, err
-		}
+		sess = session.NewImplicitClientSession(db.client.sessionPool, db.client.id)
 	}
 
 	err := db.client.validSession(sess)
@@ -261,11 +257,7 @@ func (db *Database) Drop(ctx context.Context) error {
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && db.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(db.client.sessionPool, db.client.id, session.Implicit)
-		if err != nil {
-			return err
-		}
+		sess = session.NewImplicitClientSession(db.client.sessionPool, db.client.id)
 		defer sess.EndSession()
 	}
 
@@ -362,10 +354,7 @@ func (db *Database) ListCollections(ctx context.Context, filter interface{}, opt
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && db.client.sessionPool != nil {
-		sess, err = session.NewClientSession(db.client.sessionPool, db.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(db.client.sessionPool, db.client.id)
 	}
 
 	err = db.client.validSession(sess)
@@ -775,11 +764,7 @@ func (db *Database) CreateView(ctx context.Context, viewName, viewOn string, pip
 func (db *Database) executeCreateOperation(ctx context.Context, op *operation.Create) error {
 	sess := sessionFromContext(ctx)
 	if sess == nil && db.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(db.client.sessionPool, db.client.id, session.Implicit)
-		if err != nil {
-			return err
-		}
+		sess = session.NewImplicitClientSession(db.client.sessionPool, db.client.id)
 		defer sess.EndSession()
 	}
 
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/mongo/index_view.go b/backend/vendor/go.mongodb.org/mongo-driver/mongo/index_view.go
index 6bb33f07..3500b775 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/mongo/index_view.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/mongo/index_view.go
@@ -72,11 +72,7 @@ func (iv IndexView) List(ctx context.Context, opts ...*options.ListIndexesOption
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && iv.coll.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(iv.coll.client.sessionPool, iv.coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(iv.coll.client.sessionPool, iv.coll.client.id)
 	}
 
 	err := iv.coll.client.validSession(sess)
@@ -227,10 +223,7 @@ func (iv IndexView) CreateMany(ctx context.Context, models []IndexModel, opts ..
 	sess := sessionFromContext(ctx)
 
 	if sess == nil && iv.coll.client.sessionPool != nil {
-		sess, err = session.NewClientSession(iv.coll.client.sessionPool, iv.coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(iv.coll.client.sessionPool, iv.coll.client.id)
 		defer sess.EndSession()
 	}
 
@@ -367,11 +360,7 @@ func (iv IndexView) drop(ctx context.Context, name string, opts ...*options.Drop
 
 	sess := sessionFromContext(ctx)
 	if sess == nil && iv.coll.client.sessionPool != nil {
-		var err error
-		sess, err = session.NewClientSession(iv.coll.client.sessionPool, iv.coll.client.id, session.Implicit)
-		if err != nil {
-			return nil, err
-		}
+		sess = session.NewImplicitClientSession(iv.coll.client.sessionPool, iv.coll.client.id)
 		defer sess.EndSession()
 	}
 
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/version/version.go b/backend/vendor/go.mongodb.org/mongo-driver/version/version.go
index bde75421..dd876312 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/version/version.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/version/version.go
@@ -8,4 +8,4 @@
 package version // import "go.mongodb.org/mongo-driver/version"
 
 // Driver is the current version of the driver.
-var Driver = "v1.11.1"
+var Driver = "v1.11.3"
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/x/bsonx/bsoncore/value.go b/backend/vendor/go.mongodb.org/mongo-driver/x/bsonx/bsoncore/value.go
index 54aa617c..789d2b98 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/x/bsonx/bsoncore/value.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/x/bsonx/bsoncore/value.go
@@ -323,7 +323,7 @@ func (v Value) String() string {
 		if !ok {
 			return ""
 		}
-		return fmt.Sprintf(`{"$timestamp":{"t":"%s","i":"%s"}}`, strconv.FormatUint(uint64(t), 10), strconv.FormatUint(uint64(i), 10))
+		return fmt.Sprintf(`{"$timestamp":{"t":%v,"i":%v}}`, t, i)
 	case bsontype.Int64:
 		i64, ok := v.Int64OK()
 		if !ok {
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/compression.go b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/compression.go
index fa0dec7d..b0a03f1d 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/compression.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/compression.go
@@ -94,17 +94,17 @@ func DecompressPayload(in []byte, opts CompressionOpts) ([]byte, error) {
 		}
 		return uncompressed, nil
 	case wiremessage.CompressorZstd:
-		w, err := zstd.NewReader(bytes.NewBuffer(in))
+		r, err := zstd.NewReader(bytes.NewBuffer(in))
 		if err != nil {
 			return nil, err
 		}
-		defer w.Close()
-		var b bytes.Buffer
-		_, err = io.Copy(&b, w)
+		defer r.Close()
+		uncompressed := make([]byte, opts.UncompressedSize)
+		_, err = io.ReadFull(r, uncompressed)
 		if err != nil {
 			return nil, err
 		}
-		return b.Bytes(), nil
+		return uncompressed, nil
 	default:
 		return nil, fmt.Errorf("unknown compressor ID %v", opts.Compressor)
 	}
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation.go b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation.go
index bbc25ecf..385b1c24 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation.go
@@ -433,10 +433,11 @@ func (op Operation) Execute(ctx context.Context) error {
 		// size to 16MiB because that's the maximum wire message size supported by MongoDB.
 		//
 		// Comment copied from https://cs.opensource.google/go/go/+/refs/tags/go1.19:src/fmt/print.go;l=147
-		if cap(*wm) > 16*1024*1024 {
-			return
+		//
+		// Recycle byte slices that are smaller than 16MiB and at least half occupied.
+		if c := cap(*wm); c < 16*1024*1024 && c/2 < len(*wm) {
+			memoryPool.Put(wm)
 		}
-		memoryPool.Put(wm)
 	}()
 	for {
 		// If the server or connection are nil, try to select a new server and get a new connection.
@@ -463,7 +464,7 @@ func (op Operation) Execute(ctx context.Context) error {
 			// Set the server if it has not already been set and the session type is implicit. This will
 			// limit the number of implicit sessions to no greater than an application's maxPoolSize
 			// (ignoring operations that hold on to the session like cursors).
-			if op.Client != nil && op.Client.Server == nil && op.Client.SessionType == session.Implicit {
+			if op.Client != nil && op.Client.Server == nil && op.Client.IsImplicit {
 				if op.Client.Terminated {
 					return fmt.Errorf("unexpected nil session for a terminated implicit session")
 				}
@@ -595,7 +596,7 @@ func (op Operation) Execute(ctx context.Context) error {
 			if moreToCome {
 				roundTrip = op.moreToComeRoundTrip
 			}
-			res, *wm, err = roundTrip(ctx, conn, *wm)
+			res, err = roundTrip(ctx, conn, *wm)
 
 			if ep, ok := srvr.(ErrorProcessor); ok {
 				_ = ep.ProcessError(err, conn)
@@ -855,18 +856,18 @@ func (op Operation) retryable(desc description.Server) bool {
 
 // roundTrip writes a wiremessage to the connection and then reads a wiremessage. The wm parameter
 // is reused when reading the wiremessage.
-func (op Operation) roundTrip(ctx context.Context, conn Connection, wm []byte) (result, pooledSlice []byte, err error) {
-	err = conn.WriteWireMessage(ctx, wm)
+func (op Operation) roundTrip(ctx context.Context, conn Connection, wm []byte) ([]byte, error) {
+	err := conn.WriteWireMessage(ctx, wm)
 	if err != nil {
-		return nil, wm, op.networkError(err)
+		return nil, op.networkError(err)
 	}
-	return op.readWireMessage(ctx, conn, wm)
+	return op.readWireMessage(ctx, conn)
 }
 
-func (op Operation) readWireMessage(ctx context.Context, conn Connection, wm []byte) (result, pooledSlice []byte, err error) {
-	wm, err = conn.ReadWireMessage(ctx, wm[:0])
+func (op Operation) readWireMessage(ctx context.Context, conn Connection) (result []byte, err error) {
+	wm, err := conn.ReadWireMessage(ctx, nil)
 	if err != nil {
-		return nil, wm, op.networkError(err)
+		return nil, op.networkError(err)
 	}
 
 	// If we're using a streamable connection, we set its streaming state based on the moreToCome flag in the server
@@ -878,14 +879,11 @@ func (op Operation) readWireMessage(ctx context.Context, conn Connection, wm []b
 	// decompress wiremessage
 	wm, err = op.decompressWireMessage(wm)
 	if err != nil {
-		return nil, wm, err
+		return nil, err
 	}
 
 	// decode
-	b, err := op.decodeResult(wm)
-	// Copy b to extend the lifetime. b may be a subslice of wm. wm will be added back to the memory pool and reused.
-	res := make([]byte, len(b))
-	copy(res, b)
+	res, err := op.decodeResult(wm)
 	// Update cluster/operation time and recovery tokens before handling the error to ensure we're properly updating
 	// everything.
 	op.updateClusterTimes(res)
@@ -898,14 +896,14 @@ func (op Operation) readWireMessage(ctx context.Context, conn Connection, wm []b
 	}
 
 	if err != nil {
-		return res, wm, err
+		return res, err
 	}
 
 	// If there is no error, automatically attempt to decrypt all results if client side encryption is enabled.
 	if op.Crypt != nil {
 		res, err = op.Crypt.Decrypt(ctx, res)
 	}
-	return res, wm, err
+	return res, err
 }
 
 // networkError wraps the provided error in an Error with label "NetworkError" and, if a transaction
@@ -931,7 +929,7 @@ func (op Operation) networkError(err error) error {
 
 // moreToComeRoundTrip writes a wiremessage to the provided connection. This is used when an OP_MSG is
 // being sent with  the moreToCome bit set.
-func (op *Operation) moreToComeRoundTrip(ctx context.Context, conn Connection, wm []byte) (result, pooledSlice []byte, err error) {
+func (op *Operation) moreToComeRoundTrip(ctx context.Context, conn Connection, wm []byte) (result []byte, err error) {
 	err = conn.WriteWireMessage(ctx, wm)
 	if err != nil {
 		if op.Client != nil {
@@ -939,7 +937,7 @@ func (op *Operation) moreToComeRoundTrip(ctx context.Context, conn Connection, w
 		}
 		err = Error{Message: err.Error(), Labels: []string{TransientTransactionError, NetworkError}, Wrapped: err}
 	}
-	return bsoncore.BuildDocument(nil, bsoncore.AppendInt32Element(nil, "ok", 1)), wm, err
+	return bsoncore.BuildDocument(nil, bsoncore.AppendInt32Element(nil, "ok", 1)), err
 }
 
 // decompressWireMessage handles decompressing a wiremessage. If the wiremessage
@@ -974,26 +972,13 @@ func (Operation) decompressWireMessage(wm []byte) ([]byte, error) {
 		return nil, errors.New("malformed OP_COMPRESSED: insufficient bytes for compressed wiremessage")
 	}
 
-	// Copy msg, which is a subslice of wm. wm will be used to store the return value of the decompressed message.
-	b := memoryPool.Get().(*[]byte)
-	msglen := len(msg)
-	if len(*b) < msglen {
-		*b = make([]byte, msglen)
-	}
-	copy(*b, msg)
-	defer func() {
-		memoryPool.Put(b)
-	}()
-
-	if l := int(uncompressedSize) + 16; cap(wm) < l {
-		wm = make([]byte, 0, l)
-	}
-	wm = wiremessage.AppendHeader(wm[:0], uncompressedSize+16, reqid, respto, opcode)
+	wm = make([]byte, 0, int(uncompressedSize)+16)
+	wm = wiremessage.AppendHeader(wm, uncompressedSize+16, reqid, respto, opcode)
 	opts := CompressionOpts{
 		Compressor:       compressorID,
 		UncompressedSize: uncompressedSize,
 	}
-	uncompressed, err := DecompressPayload((*b)[0:msglen], opts)
+	uncompressed, err := DecompressPayload(msg, opts)
 	if err != nil {
 		return nil, err
 	}
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation_exhaust.go b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation_exhaust.go
index df7856b8..e0879de3 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation_exhaust.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation_exhaust.go
@@ -18,13 +18,7 @@ func (op Operation) ExecuteExhaust(ctx context.Context, conn StreamerConnection)
 		return errors.New("exhaust read must be done with a connection that is currently streaming")
 	}
 
-	wm := memoryPool.Get().(*[]byte)
-	defer func() {
-		memoryPool.Put(wm)
-	}()
-	var res []byte
-	var err error
-	res, *wm, err = op.readWireMessage(ctx, conn, (*wm)[:0])
+	res, err := op.readWireMessage(ctx, conn)
 	if err != nil {
 		return err
 	}
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/session/client_session.go b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/session/client_session.go
index dfa09b84..ab73e684 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/session/client_session.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/session/client_session.go
@@ -46,15 +46,6 @@ var ErrUnackWCUnsupported = errors.New("transactions do not support unacknowledg
 // ErrSnapshotTransaction is returned if an transaction is started on a snapshot session.
 var ErrSnapshotTransaction = errors.New("transactions are not supported in snapshot sessions")
 
-// Type describes the type of the session
-type Type uint8
-
-// These constants are the valid types for a client session.
-const (
-	Explicit Type = iota
-	Implicit
-)
-
 // TransactionState indicates the state of the transactions FSM.
 type TransactionState uint8
 
@@ -113,7 +104,7 @@ type Client struct {
 	ClusterTime    bson.Raw
 	Consistent     bool // causal consistency
 	OperationTime  *primitive.Timestamp
-	SessionType    Type
+	IsImplicit     bool
 	Terminated     bool
 	RetryingCommit bool
 	Committing     bool
@@ -179,15 +170,27 @@ func MaxClusterTime(ct1, ct2 bson.Raw) bson.Raw {
 	return ct1
 }
 
-// NewClientSession creates a Client.
-func NewClientSession(pool *Pool, clientID uuid.UUID, sessionType Type, opts ...*ClientOptions) (*Client, error) {
-	mergedOpts := mergeClientOptions(opts...)
+// NewImplicitClientSession creates a new implicit client-side session.
+func NewImplicitClientSession(pool *Pool, clientID uuid.UUID) *Client {
+	// Server-side session checkout for implicit sessions is deferred until after checking out a
+	// connection, so don't check out a server-side session right now. This will limit the number of
+	// implicit sessions to no greater than an application's maxPoolSize.
 
-	c := &Client{
-		ClientID:    clientID,
-		SessionType: sessionType,
-		pool:        pool,
+	return &Client{
+		pool:       pool,
+		ClientID:   clientID,
+		IsImplicit: true,
 	}
+}
+
+// NewClientSession creates a new explicit client-side session.
+func NewClientSession(pool *Pool, clientID uuid.UUID, opts ...*ClientOptions) (*Client, error) {
+	c := &Client{
+		pool:     pool,
+		ClientID: clientID,
+	}
+
+	mergedOpts := mergeClientOptions(opts...)
 	if mergedOpts.DefaultReadPreference != nil {
 		c.transactionRp = mergedOpts.DefaultReadPreference
 	}
@@ -204,8 +207,9 @@ func NewClientSession(pool *Pool, clientID uuid.UUID, sessionType Type, opts ...
 		c.Snapshot = *mergedOpts.Snapshot
 	}
 
-	// The default for causalConsistency is true, unless Snapshot is enabled, then it's false. Set
-	// the default and then allow any explicit causalConsistency setting to override it.
+	// For explicit sessions, the default for causalConsistency is true, unless Snapshot is
+	// enabled, then it's false. Set the default and then allow any explicit causalConsistency
+	// setting to override it.
 	c.Consistent = !c.Snapshot
 	if mergedOpts.CausalConsistency != nil {
 		c.Consistent = *mergedOpts.CausalConsistency
@@ -215,12 +219,8 @@ func NewClientSession(pool *Pool, clientID uuid.UUID, sessionType Type, opts ...
 		return nil, errors.New("causal consistency and snapshot cannot both be set for a session")
 	}
 
-	// Server checkout for implicit sessions are deferred until after checking out a connection. This will limit the
-	// number of implicit sessions to no greater than an applications maxPoolSize.
-	if sessionType == Explicit {
-		if err := c.SetServer(); err != nil {
-			return nil, err
-		}
+	if err := c.SetServer(); err != nil {
+		return nil, err
 	}
 
 	return c, nil
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/connection.go b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/connection.go
index e54a6d48..1a8bde43 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/connection.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/connection.go
@@ -578,9 +578,10 @@ func (c initConnection) SupportsStreaming() bool {
 }
 
 // Connection implements the driver.Connection interface to allow reading and writing wire
-// messages and the driver.Expirable interface to allow expiring.
+// messages and the driver.Expirable interface to allow expiring. It wraps an underlying
+// topology.connection to make it more goroutine-safe and nil-safe.
 type Connection struct {
-	*connection
+	connection    *connection
 	refCount      int
 	cleanupPoolFn func()
 
@@ -602,7 +603,7 @@ func (c *Connection) WriteWireMessage(ctx context.Context, wm []byte) error {
 	if c.connection == nil {
 		return ErrConnectionClosed
 	}
-	return c.writeWireMessage(ctx, wm)
+	return c.connection.writeWireMessage(ctx, wm)
 }
 
 // ReadWireMessage handles reading a wire message from the underlying connection. The dst parameter
@@ -613,7 +614,7 @@ func (c *Connection) ReadWireMessage(ctx context.Context, dst []byte) ([]byte, e
 	if c.connection == nil {
 		return dst, ErrConnectionClosed
 	}
-	return c.readWireMessage(ctx, dst)
+	return c.connection.readWireMessage(ctx, dst)
 }
 
 // CompressWireMessage handles compressing the provided wire message using the underlying
@@ -656,7 +657,7 @@ func (c *Connection) Description() description.Server {
 	if c.connection == nil {
 		return description.Server{}
 	}
-	return c.desc
+	return c.connection.desc
 }
 
 // Close returns this connection to the connection pool. This method may not closeConnection the underlying
@@ -679,12 +680,12 @@ func (c *Connection) Expire() error {
 		return nil
 	}
 
-	_ = c.close()
+	_ = c.connection.close()
 	return c.cleanupReferences()
 }
 
 func (c *Connection) cleanupReferences() error {
-	err := c.pool.checkIn(c.connection)
+	err := c.connection.pool.checkIn(c.connection)
 	if c.cleanupPoolFn != nil {
 		c.cleanupPoolFn()
 		c.cleanupPoolFn = nil
@@ -709,14 +710,22 @@ func (c *Connection) ID() string {
 	if c.connection == nil {
 		return ""
 	}
-	return c.id
+	return c.connection.id
+}
+
+// ServerConnectionID returns the server connection ID of this connection.
+func (c *Connection) ServerConnectionID() *int32 {
+	if c.connection == nil {
+		return nil
+	}
+	return c.connection.serverConnectionID
 }
 
 // Stale returns if the connection is stale.
 func (c *Connection) Stale() bool {
 	c.mu.RLock()
 	defer c.mu.RUnlock()
-	return c.pool.stale(c.connection)
+	return c.connection.pool.stale(c.connection)
 }
 
 // Address returns the address of this connection.
@@ -726,27 +735,27 @@ func (c *Connection) Address() address.Address {
 	if c.connection == nil {
 		return address.Address("0.0.0.0")
 	}
-	return c.addr
+	return c.connection.addr
 }
 
 // LocalAddress returns the local address of the connection
 func (c *Connection) LocalAddress() address.Address {
 	c.mu.RLock()
 	defer c.mu.RUnlock()
-	if c.connection == nil || c.nc == nil {
+	if c.connection == nil || c.connection.nc == nil {
 		return address.Address("0.0.0.0")
 	}
-	return address.Address(c.nc.LocalAddr().String())
+	return address.Address(c.connection.nc.LocalAddr().String())
 }
 
 // PinToCursor updates this connection to reflect that it is pinned to a cursor.
 func (c *Connection) PinToCursor() error {
-	return c.pin("cursor", c.pool.pinConnectionToCursor, c.pool.unpinConnectionFromCursor)
+	return c.pin("cursor", c.connection.pool.pinConnectionToCursor, c.connection.pool.unpinConnectionFromCursor)
 }
 
 // PinToTransaction updates this connection to reflect that it is pinned to a transaction.
 func (c *Connection) PinToTransaction() error {
-	return c.pin("transaction", c.pool.pinConnectionToTransaction, c.pool.unpinConnectionFromTransaction)
+	return c.pin("transaction", c.connection.pool.pinConnectionToTransaction, c.connection.pool.unpinConnectionFromTransaction)
 }
 
 func (c *Connection) pin(reason string, updatePoolFn, cleanupPoolFn func()) error {
diff --git a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/server.go b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/server.go
index d416f6c1..03dea1bc 100644
--- a/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/server.go
+++ b/backend/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/server.go
@@ -473,19 +473,11 @@ func (s *Server) update() {
 	checkNow := s.checkNow
 	done := s.done
 
-	var doneOnce bool
 	defer func() {
-		if r := recover(); r != nil {
-			if doneOnce {
-				return
-			}
-			// We keep this goroutine alive attempting to read from the done channel.
-			<-done
-		}
+		_ = recover()
 	}()
 
 	closeServer := func() {
-		doneOnce = true
 		s.subLock.Lock()
 		for id, c := range s.subscribers {
 			close(c)
diff --git a/backend/vendor/go.uber.org/goleak/CHANGELOG.md b/backend/vendor/go.uber.org/goleak/CHANGELOG.md
index 761db2ca..530f0a57 100644
--- a/backend/vendor/go.uber.org/goleak/CHANGELOG.md
+++ b/backend/vendor/go.uber.org/goleak/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [1.2.1]
+### Changed
+- Drop golang/x/lint dependency.
+
+[1.2.1]: https://github.com/uber-go/goleak/compare/v1.2.0...v1.2.1
+
 ## [1.2.0]
 ### Added
 - Add Cleanup option that can be used for registering cleanup callbacks. (#78)
@@ -47,5 +53,7 @@ Thanks to @denis-tingajkin for their contributions to this release.
 
 [1.0.0]: https://github.com/uber-go/goleak/compare/v0.10.0...v1.0.0
 
-## 0.10.0
+## [0.10.0]
 - Initial release.
+
+[0.10.0]: https://github.com/uber-go/goleak/compare/v0.10.0...HEAD
\ No newline at end of file
diff --git a/backend/vendor/go.uber.org/goleak/Makefile b/backend/vendor/go.uber.org/goleak/Makefile
index 53763fa8..8dbf7226 100644
--- a/backend/vendor/go.uber.org/goleak/Makefile
+++ b/backend/vendor/go.uber.org/goleak/Makefile
@@ -1,6 +1,6 @@
 export GOBIN ?= $(shell pwd)/bin
 
-GOLINT = $(GOBIN)/golint
+REVIVE = $(GOBIN)/revive
 
 GO_FILES := $(shell \
 	find . '(' -path '*/.*' -o -path './vendor' ')' -prune \
@@ -24,18 +24,18 @@ cover:
 	go test -race -coverprofile=cover.out -coverpkg=./... ./...
 	go tool cover -html=cover.out -o cover.html
 
-$(GOLINT):
-	go install golang.org/x/lint/golint
+$(REVIVE):
+	cd tools && go install github.com/mgechev/revive
 
 .PHONY: lint
-lint: $(GOLINT)
+lint: $(REVIVE)
 	@rm -rf lint.log
 	@echo "Checking formatting..."
 	@gofmt -d -s $(GO_FILES) 2>&1 | tee lint.log
 	@echo "Checking vet..."
 	@go vet ./... 2>&1 | tee -a lint.log
 	@echo "Checking lint..."
-	@$(GOLINT) ./... 2>&1 | tee -a lint.log
+	@$(REVIVE) -set_exit_status ./... 2>&1 | tee -a lint.log
 	@echo "Checking for unresolved FIXMEs..."
 	@git grep -i fixme | grep -v -e '^vendor/' -e '^Makefile' | tee -a lint.log
 	@[ ! -s lint.log ]
diff --git a/backend/vendor/go.uber.org/goleak/README.md b/backend/vendor/go.uber.org/goleak/README.md
index fb92dabc..a545b5e7 100644
--- a/backend/vendor/go.uber.org/goleak/README.md
+++ b/backend/vendor/go.uber.org/goleak/README.md
@@ -8,7 +8,9 @@ You can use `go get` to get the latest version:
 
 `go get -u go.uber.org/goleak`
 
-`goleak` also supports semver releases. It is compatible with Go 1.5+.
+`goleak` also supports semver releases.
+
+Note that go-leak only [supports][release] the two most recent minor versions of Go.
 
 ## Quick Start
 
@@ -69,3 +71,4 @@ No breaking changes will be made to exported APIs before 2.0.
 [ci]: https://github.com/uber-go/goleak/actions/workflows/go.yml
 [cov-img]: https://codecov.io/gh/uber-go/goleak/branch/master/graph/badge.svg
 [cov]: https://codecov.io/gh/uber-go/goleak
+[release]: https://go.dev/doc/devel/release#policy
diff --git a/backend/vendor/go.uber.org/goleak/internal/stack/doc.go b/backend/vendor/go.uber.org/goleak/internal/stack/doc.go
new file mode 100644
index 00000000..9179a565
--- /dev/null
+++ b/backend/vendor/go.uber.org/goleak/internal/stack/doc.go
@@ -0,0 +1,22 @@
+// Copyright (c) 2017-2023 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Package stack is used for parsing stacks from `runtime.Stack`.
+package stack
diff --git a/backend/vendor/golang.org/x/crypto/acme/rfc8555.go b/backend/vendor/golang.org/x/crypto/acme/rfc8555.go
index ee24dfde..3152e531 100644
--- a/backend/vendor/golang.org/x/crypto/acme/rfc8555.go
+++ b/backend/vendor/golang.org/x/crypto/acme/rfc8555.go
@@ -117,7 +117,7 @@ func (c *Client) updateRegRFC(ctx context.Context, a *Account) (*Account, error)
 	return responseAccount(res)
 }
 
-// getGegRFC is equivalent to c.GetReg but for CAs implementing RFC 8555.
+// getRegRFC is equivalent to c.GetReg but for CAs implementing RFC 8555.
 // It expects c.Discover to have already been called.
 func (c *Client) getRegRFC(ctx context.Context) (*Account, error) {
 	req := json.RawMessage(`{"onlyReturnExisting": true}`)
diff --git a/backend/vendor/golang.org/x/crypto/scrypt/scrypt.go b/backend/vendor/golang.org/x/crypto/scrypt/scrypt.go
deleted file mode 100644
index c971a99f..00000000
--- a/backend/vendor/golang.org/x/crypto/scrypt/scrypt.go
+++ /dev/null
@@ -1,212 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package scrypt implements the scrypt key derivation function as defined in
-// Colin Percival's paper "Stronger Key Derivation via Sequential Memory-Hard
-// Functions" (https://www.tarsnap.com/scrypt/scrypt.pdf).
-package scrypt // import "golang.org/x/crypto/scrypt"
-
-import (
-	"crypto/sha256"
-	"encoding/binary"
-	"errors"
-	"math/bits"
-
-	"golang.org/x/crypto/pbkdf2"
-)
-
-const maxInt = int(^uint(0) >> 1)
-
-// blockCopy copies n numbers from src into dst.
-func blockCopy(dst, src []uint32, n int) {
-	copy(dst, src[:n])
-}
-
-// blockXOR XORs numbers from dst with n numbers from src.
-func blockXOR(dst, src []uint32, n int) {
-	for i, v := range src[:n] {
-		dst[i] ^= v
-	}
-}
-
-// salsaXOR applies Salsa20/8 to the XOR of 16 numbers from tmp and in,
-// and puts the result into both tmp and out.
-func salsaXOR(tmp *[16]uint32, in, out []uint32) {
-	w0 := tmp[0] ^ in[0]
-	w1 := tmp[1] ^ in[1]
-	w2 := tmp[2] ^ in[2]
-	w3 := tmp[3] ^ in[3]
-	w4 := tmp[4] ^ in[4]
-	w5 := tmp[5] ^ in[5]
-	w6 := tmp[6] ^ in[6]
-	w7 := tmp[7] ^ in[7]
-	w8 := tmp[8] ^ in[8]
-	w9 := tmp[9] ^ in[9]
-	w10 := tmp[10] ^ in[10]
-	w11 := tmp[11] ^ in[11]
-	w12 := tmp[12] ^ in[12]
-	w13 := tmp[13] ^ in[13]
-	w14 := tmp[14] ^ in[14]
-	w15 := tmp[15] ^ in[15]
-
-	x0, x1, x2, x3, x4, x5, x6, x7, x8 := w0, w1, w2, w3, w4, w5, w6, w7, w8
-	x9, x10, x11, x12, x13, x14, x15 := w9, w10, w11, w12, w13, w14, w15
-
-	for i := 0; i < 8; i += 2 {
-		x4 ^= bits.RotateLeft32(x0+x12, 7)
-		x8 ^= bits.RotateLeft32(x4+x0, 9)
-		x12 ^= bits.RotateLeft32(x8+x4, 13)
-		x0 ^= bits.RotateLeft32(x12+x8, 18)
-
-		x9 ^= bits.RotateLeft32(x5+x1, 7)
-		x13 ^= bits.RotateLeft32(x9+x5, 9)
-		x1 ^= bits.RotateLeft32(x13+x9, 13)
-		x5 ^= bits.RotateLeft32(x1+x13, 18)
-
-		x14 ^= bits.RotateLeft32(x10+x6, 7)
-		x2 ^= bits.RotateLeft32(x14+x10, 9)
-		x6 ^= bits.RotateLeft32(x2+x14, 13)
-		x10 ^= bits.RotateLeft32(x6+x2, 18)
-
-		x3 ^= bits.RotateLeft32(x15+x11, 7)
-		x7 ^= bits.RotateLeft32(x3+x15, 9)
-		x11 ^= bits.RotateLeft32(x7+x3, 13)
-		x15 ^= bits.RotateLeft32(x11+x7, 18)
-
-		x1 ^= bits.RotateLeft32(x0+x3, 7)
-		x2 ^= bits.RotateLeft32(x1+x0, 9)
-		x3 ^= bits.RotateLeft32(x2+x1, 13)
-		x0 ^= bits.RotateLeft32(x3+x2, 18)
-
-		x6 ^= bits.RotateLeft32(x5+x4, 7)
-		x7 ^= bits.RotateLeft32(x6+x5, 9)
-		x4 ^= bits.RotateLeft32(x7+x6, 13)
-		x5 ^= bits.RotateLeft32(x4+x7, 18)
-
-		x11 ^= bits.RotateLeft32(x10+x9, 7)
-		x8 ^= bits.RotateLeft32(x11+x10, 9)
-		x9 ^= bits.RotateLeft32(x8+x11, 13)
-		x10 ^= bits.RotateLeft32(x9+x8, 18)
-
-		x12 ^= bits.RotateLeft32(x15+x14, 7)
-		x13 ^= bits.RotateLeft32(x12+x15, 9)
-		x14 ^= bits.RotateLeft32(x13+x12, 13)
-		x15 ^= bits.RotateLeft32(x14+x13, 18)
-	}
-	x0 += w0
-	x1 += w1
-	x2 += w2
-	x3 += w3
-	x4 += w4
-	x5 += w5
-	x6 += w6
-	x7 += w7
-	x8 += w8
-	x9 += w9
-	x10 += w10
-	x11 += w11
-	x12 += w12
-	x13 += w13
-	x14 += w14
-	x15 += w15
-
-	out[0], tmp[0] = x0, x0
-	out[1], tmp[1] = x1, x1
-	out[2], tmp[2] = x2, x2
-	out[3], tmp[3] = x3, x3
-	out[4], tmp[4] = x4, x4
-	out[5], tmp[5] = x5, x5
-	out[6], tmp[6] = x6, x6
-	out[7], tmp[7] = x7, x7
-	out[8], tmp[8] = x8, x8
-	out[9], tmp[9] = x9, x9
-	out[10], tmp[10] = x10, x10
-	out[11], tmp[11] = x11, x11
-	out[12], tmp[12] = x12, x12
-	out[13], tmp[13] = x13, x13
-	out[14], tmp[14] = x14, x14
-	out[15], tmp[15] = x15, x15
-}
-
-func blockMix(tmp *[16]uint32, in, out []uint32, r int) {
-	blockCopy(tmp[:], in[(2*r-1)*16:], 16)
-	for i := 0; i < 2*r; i += 2 {
-		salsaXOR(tmp, in[i*16:], out[i*8:])
-		salsaXOR(tmp, in[i*16+16:], out[i*8+r*16:])
-	}
-}
-
-func integer(b []uint32, r int) uint64 {
-	j := (2*r - 1) * 16
-	return uint64(b[j]) | uint64(b[j+1])<<32
-}
-
-func smix(b []byte, r, N int, v, xy []uint32) {
-	var tmp [16]uint32
-	R := 32 * r
-	x := xy
-	y := xy[R:]
-
-	j := 0
-	for i := 0; i < R; i++ {
-		x[i] = binary.LittleEndian.Uint32(b[j:])
-		j += 4
-	}
-	for i := 0; i < N; i += 2 {
-		blockCopy(v[i*R:], x, R)
-		blockMix(&tmp, x, y, r)
-
-		blockCopy(v[(i+1)*R:], y, R)
-		blockMix(&tmp, y, x, r)
-	}
-	for i := 0; i < N; i += 2 {
-		j := int(integer(x, r) & uint64(N-1))
-		blockXOR(x, v[j*R:], R)
-		blockMix(&tmp, x, y, r)
-
-		j = int(integer(y, r) & uint64(N-1))
-		blockXOR(y, v[j*R:], R)
-		blockMix(&tmp, y, x, r)
-	}
-	j = 0
-	for _, v := range x[:R] {
-		binary.LittleEndian.PutUint32(b[j:], v)
-		j += 4
-	}
-}
-
-// Key derives a key from the password, salt, and cost parameters, returning
-// a byte slice of length keyLen that can be used as cryptographic key.
-//
-// N is a CPU/memory cost parameter, which must be a power of two greater than 1.
-// r and p must satisfy r * p < 2³⁰. If the parameters do not satisfy the
-// limits, the function returns a nil byte slice and an error.
-//
-// For example, you can get a derived key for e.g. AES-256 (which needs a
-// 32-byte key) by doing:
-//
-//	dk, err := scrypt.Key([]byte("some password"), salt, 32768, 8, 1, 32)
-//
-// The recommended parameters for interactive logins as of 2017 are N=32768, r=8
-// and p=1. The parameters N, r, and p should be increased as memory latency and
-// CPU parallelism increases; consider setting N to the highest power of 2 you
-// can derive within 100 milliseconds. Remember to get a good random salt.
-func Key(password, salt []byte, N, r, p, keyLen int) ([]byte, error) {
-	if N <= 1 || N&(N-1) != 0 {
-		return nil, errors.New("scrypt: N must be > 1 and a power of 2")
-	}
-	if uint64(r)*uint64(p) >= 1<<30 || r > maxInt/128/p || r > maxInt/256 || N > maxInt/128/r {
-		return nil, errors.New("scrypt: parameters are too large")
-	}
-
-	xy := make([]uint32, 64*r)
-	v := make([]uint32, 32*N*r)
-	b := pbkdf2.Key(password, salt, 1, p*128*r, sha256.New)
-
-	for i := 0; i < p; i++ {
-		smix(b[i*128*r:], r, N, v, xy)
-	}
-
-	return pbkdf2.Key(password, b, 1, keyLen, sha256.New), nil
-}
diff --git a/backend/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go b/backend/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go
deleted file mode 100644
index 37dc0cfd..00000000
--- a/backend/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go
+++ /dev/null
@@ -1,71 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package ctxhttp provides helper functions for performing context-aware HTTP requests.
-package ctxhttp // import "golang.org/x/net/context/ctxhttp"
-
-import (
-	"context"
-	"io"
-	"net/http"
-	"net/url"
-	"strings"
-)
-
-// Do sends an HTTP request with the provided http.Client and returns
-// an HTTP response.
-//
-// If the client is nil, http.DefaultClient is used.
-//
-// The provided ctx must be non-nil. If it is canceled or times out,
-// ctx.Err() will be returned.
-func Do(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) {
-	if client == nil {
-		client = http.DefaultClient
-	}
-	resp, err := client.Do(req.WithContext(ctx))
-	// If we got an error, and the context has been canceled,
-	// the context's error is probably more useful.
-	if err != nil {
-		select {
-		case <-ctx.Done():
-			err = ctx.Err()
-		default:
-		}
-	}
-	return resp, err
-}
-
-// Get issues a GET request via the Do function.
-func Get(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
-	req, err := http.NewRequest("GET", url, nil)
-	if err != nil {
-		return nil, err
-	}
-	return Do(ctx, client, req)
-}
-
-// Head issues a HEAD request via the Do function.
-func Head(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
-	req, err := http.NewRequest("HEAD", url, nil)
-	if err != nil {
-		return nil, err
-	}
-	return Do(ctx, client, req)
-}
-
-// Post issues a POST request via the Do function.
-func Post(ctx context.Context, client *http.Client, url string, bodyType string, body io.Reader) (*http.Response, error) {
-	req, err := http.NewRequest("POST", url, body)
-	if err != nil {
-		return nil, err
-	}
-	req.Header.Set("Content-Type", bodyType)
-	return Do(ctx, client, req)
-}
-
-// PostForm issues a POST request via the Do function.
-func PostForm(ctx context.Context, client *http.Client, url string, data url.Values) (*http.Response, error) {
-	return Post(ctx, client, url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
-}
diff --git a/backend/vendor/golang.org/x/net/html/doc.go b/backend/vendor/golang.org/x/net/html/doc.go
index 822ed42a..7a96eae3 100644
--- a/backend/vendor/golang.org/x/net/html/doc.go
+++ b/backend/vendor/golang.org/x/net/html/doc.go
@@ -92,6 +92,21 @@ example, to process each anchor node in depth-first order:
 The relevant specifications include:
 https://html.spec.whatwg.org/multipage/syntax.html and
 https://html.spec.whatwg.org/multipage/syntax.html#tokenization
+
+# Security Considerations
+
+Care should be taken when parsing and interpreting HTML, whether full documents
+or fragments, within the framework of the HTML specification, especially with
+regard to untrusted inputs.
+
+This package provides both a tokenizer and a parser. Only the parser constructs
+a DOM according to the HTML specification, resolving malformed and misplaced
+tags where appropriate. The tokenizer simply tokenizes the HTML presented to it,
+and as such does not resolve issues that may exist in the processed HTML,
+producing a literal interpretation of the input.
+
+If your use case requires semantically well-formed HTML, as defined by the
+WHATWG specifiction, the parser should be used rather than the tokenizer.
 */
 package html // import "golang.org/x/net/html"
 
diff --git a/backend/vendor/golang.org/x/net/html/escape.go b/backend/vendor/golang.org/x/net/html/escape.go
index d8561396..04c6bec2 100644
--- a/backend/vendor/golang.org/x/net/html/escape.go
+++ b/backend/vendor/golang.org/x/net/html/escape.go
@@ -193,6 +193,87 @@ func lower(b []byte) []byte {
 	return b
 }
 
+// escapeComment is like func escape but escapes its input bytes less often.
+// Per https://github.com/golang/go/issues/58246 some HTML comments are (1)
+// meaningful and (2) contain angle brackets that we'd like to avoid escaping
+// unless we have to.
+//
+// "We have to" includes the '&' byte, since that introduces other escapes.
+//
+// It also includes those bytes (not including EOF) that would otherwise end
+// the comment. Per the summary table at the bottom of comment_test.go, this is
+// the '>' byte that, per above, we'd like to avoid escaping unless we have to.
+//
+// Studying the summary table (and T actions in its '>' column) closely, we
+// only need to escape in states 43, 44, 49, 51 and 52. State 43 is at the
+// start of the comment data. State 52 is after a '!'. The other three states
+// are after a '-'.
+//
+// Our algorithm is thus to escape every '&' and to escape '>' if and only if:
+//   - The '>' is after a '!' or '-' (in the unescaped data) or
+//   - The '>' is at the start of the comment data (after the opening ""); err != nil {
diff --git a/backend/vendor/golang.org/x/net/html/token.go b/backend/vendor/golang.org/x/net/html/token.go
index ae24a6fd..5c2a1f4e 100644
--- a/backend/vendor/golang.org/x/net/html/token.go
+++ b/backend/vendor/golang.org/x/net/html/token.go
@@ -110,7 +110,7 @@ func (t Token) String() string {
 	case SelfClosingTagToken:
 		return "<" + t.tagString() + "/>"
 	case CommentToken:
-		return ""
+		return ""
 	case DoctypeToken:
 		return ""
 	}
@@ -598,6 +598,11 @@ scriptDataDoubleEscapeEnd:
 // readComment reads the next comment token starting with "")
 					return
+				} else if c == '-' {
+					dashCount = 1
+					beginning = false
+					continue
 				}
 			}
 		}
@@ -645,6 +649,35 @@ func (z *Tokenizer) readComment() {
 	}
 }
 
+func (z *Tokenizer) calculateAbruptCommentDataEnd() int {
+	raw := z.Raw()
+	const prefixLen = len("