Add missing changes changelog files (backport #9376) (#9382)

* Add missing changes changelog files (#9376)

* Copy over v0.34.21 section of `CHANGELOG.md`

* Missing breaking changes in `CHANGELOG_PENDING.md`

* bump

* Fix doc link

* Fix doc link 2

(cherry picked from commit d54ed6423f)

* Adapted version for backport commit

* Set version to v0.34

Co-authored-by: Sergio Mena <sergio@informal.systems>

CHANGELOG.md

@@ -2,6 +2,38 @@
 
 Friendly reminder, we have a [bug bounty program](https://hackerone.com/cosmos).
 
+## v0.34.21
+
+Release highlights include:
+
+- A new `[storage]` configuration section and flag `discard_abci_responses`,
+  which, if enabled, discards all ABCI responses except the latest one in order
+  to reduce disk space usage in the state store. When enabled, the
+  `block_results` RPC endpoint can no longer function and will return an error.
+- A new CLI command, `reindex-event`, to re-index block and tx events to the
+  event sinks. You can run this command when the event store backend
+  dropped/disconnected or you want to replace the backend. When
+  `discard_abci_responses` is enabled, you will not be able to use this command.
+
+Special thanks to external contributors on this release: @rootwarp & @animart
+
+### FEATURES
+
+- [cli] [\#9083](https://github.com/tendermint/tendermint/issues/9083) Backport command to reindex missed events (@cmwaters)
+- [cli] [\#9107](https://github.com/tendermint/tendermint/issues/9107) Add the `p2p.external-address` argument to set the node P2P external address (@amimart)
+
+### IMPROVEMENTS
+
+- [config] [\#9054](https://github.com/tendermint/tendermint/issues/9054) `discard_abci_responses` flag added to discard all ABCI
+  responses except the last in order to save on storage space in the state
+  store (@samricotta)
+
+### BUG FIXES
+
+- [mempool] [\#9033](https://github.com/tendermint/tendermint/issues/9033) Rework lock discipline to mitigate callback deadlocks in the
+  priority mempool
+- [cli] [\#9103](https://github.com/tendermint/tendermint/issues/9103) fix unsafe-reset-all for working with home path (@rootwarp)
+
 ## v0.34.20
 
 Special thanks to external contributors on this release: @joeabbey @yihuang

CHANGELOG_PENDING.md

@@ -18,7 +18,13 @@ Friendly reminder, we have a [bug bounty program](https://hackerone.com/tendermi
   - [abci/params] \#9287 Deduplicate `ConsensusParams` and `BlockParams` so only `types` proto definitions are used (@cmwaters)
     - Remove `TimeIotaMs` and use a hard-coded 1 millisecond value to ensure monotonically increasing block times.
     - Rename `AppVersion` to `App` so as to not stutter.
+  - [types] \#9287 Reduce the use of protobuf types in core logic. (@cmwaters)
+    - `ConsensusParams`, `BlockParams`, `ValidatorParams`, `EvidenceParams`, `VersionParams` have become native types.
+      They still utilize protobuf when being sent over the wire or written to disk.
+    - Moved `ValidateConsensusParams` inside (now native type) `ConsensusParams`, and renamed it to `ValidateBasic`.
   - [abci] \#9301 New ABCI methods `PrepareProposal` and `ProcessProposal` which give the app control over transactions proposed and allows for verification of proposed blocks.
+  - [abci] \#8216 Renamed `EvidenceType` to `MisbehaviorType` and `Evidence` to `Misbehavior` as a more accurate label of their contents. (@williambanfield, @sergio-mena)
+  - [abci] \#9122 Renamed `LastCommitInfo` to `CommitInfo` in preparation for vote extensions. (@cmwaters)
   - [abci] \#8656, \#8901 Added cli commands for `PrepareProposal` and `ProcessProposal`. (@jmalicevic, @hvanz)
   - [abci] \#6403 Change the `key` and `value` fields from `[]byte` to `string` in the `EventAttribute` type. (@alexanderbez)
 

spec/p2p/messages/state-sync.md

@@ -91,7 +91,7 @@ if necessary. The light block at the height of the snapshot will be used to veri
 |---------------|---------------------------------------------------------|--------------------------------------|--------------|
 | light_block   | [LightBlock](../../core/data_structures.md#lightblock)  | Light block at the height requested  | 1            |
 
-State sync will use [light client verification](../../light-client/verification.README.md) to verify
+State sync will use [light client verification](../../light-client/verification/README.md) to verify
 the light blocks.
 
 

tools/tm-signer-harness/README.md

@@ -1,5 +1,5 @@
 # tm-signer-harness
 
 See the [`tm-signer-harness`
-documentation](https://tendermint.com/docs/tools/remote-signer-validation.html)
+documentation](https://docs.tendermint.com/v0.34/tools/remote-signer-validation.html)
 for more details.