* PBTS: second draft of protocol specification
* PBTS: updates in consensus algorithm v2
* PBTS: adding/fixing links in second draft
* PBTS: updated links for new algorithm specification
* PBTS: changes suggested by Josef
Co-authored-by: Josef Widder <44643235+josef-widder@users.noreply.github.com>
* PBTS: minor fixes and additions to spec
Co-authored-by: Josef Widder <44643235+josef-widder@users.noreply.github.com>
