EDIT: CHANGELOG.md: https://github.com/tendermint/tendermint/blob/master/CHANGELOG.md#080-january-13-2017

Summary

• Validator Set changes
• Handshake between Tendermint and App
• BFT-liveness fix
• Way more tests
• TMSP is now ABCI!

Details

• Misc
  • Update logging to be less verbose
  • Better test coverage (37% -> 49%)
  • Canonical SignBytes for signable types
• Mempool
  • Write-Ahead Log via go-autofile
  • Fix peer leak
• Consensus
  • Write-Ahead Log via go-autofile
  • Use BlockID = (Hash, PartsHeader) to represent blocks
  • Update Vote structure to include validator address and index
  • New Maj23Msg for peers to alert others they've seen a Maj23, in order to track and handle conflicting votes intelligently to prevent Byzantine faults from causing halts
  • Better in-process testing for the consensus reactor and byzantine faults
  • Fix panic on POLRound=-1
  • Configurable block part set size
  • Validator set changes
  • Set the CommitTime
  • Better abstraction over timeout mechanics
  • Optionally skip TimeoutCommit if we have all the votes
• TMSP
  • TMSP is now ABCI
  • AppendTx is now DeliverTx
  • Send BeginBlock, with Header
  • Handshake and replay for app persistence and recovery
• RPC
  • BroadcastTx via GRPC
  • Hex strings are "0x" prefixed
• Testing
  • More extensive testing of consensus package
  • More crash/restart tests of individual nodes at preset failure points and of networks at arbitrary points

Pull Requests

• Handshake (Info and BeginBlock) - #265
• BroadcastTxCommit via GRPC - #255
• BFT Vote set changes for - #314
• Validator set changes - #319, #359
• New WAL - #310
• CanonicalJSON sign bytes - #325
• TimeoutTicker and fix tests - #330, #337
• Stability - #337
• Crash/Restart tests -#343
• Optional SkipTimeoutCommit - #360, #362
• Rename AppendTx -> DeliverTx and TMSP -> ABCI - #365