v0.19.0

This is a major (pre-1.0.0) release that brings upgrades, safety improvements, cloud configuration, and GRPC endpoints to Burrow.

Breaking changes

In addition to breaking changes associated with Tendermint (see their changelog):

• State checkpointing logic has changed which has we load based on blockchain
• Event format has changed over rpc/V0 see execution/events/ package
• On-disk keys format has change from monax-keys to be more standard burrow keys
• Address format has been changed (by Tendermint and we have followed suite) - conversion is possible but simpler to regenerated keys

Features

• Tendermint 0.21.0
• Implemented EVM opcodes: REVERT, INVALID, SHL, SAR, SHR, RETURNDATACOPY, RETURNDATASIZE
• Add config templating with burrow configure --config-template-in --config-out
• Add config templates for kubernetes
• Integrate monax-keys as internal (default) or standalone keys service, key gen exposed over CLI
• Use GRPC for keys
• Add GRPC service for Transactor and Events
• Store ExecutionEvent by height and index in merkle tree state
• Add historical query for all time with GetEvents
• Add streaming GRPC service for ExecutionEvents with query language over tags
• Add metadata to ExecutionEvents
• Add BlockExplorer CLI for forensics
• Expose reason for REVERT
• Add last_block_info healthcheck endpoint to rpc/TM

Improvements

• Implement checkpointing when saving application and blockchain state in commit - interrupted commit rolls burrow back to last block whereon it can catch up using Tendermint
• Maintain separate read-only tree in state so that long-running RPC request cannot block writes
• Improve state safety
• Improved input account server-side-signing
• Increase subscription reap time on rpc/V0 to 20 seconds
• Reorganise CLI
• Improve internal serialisation
• Refactor and modularise execution logic

Bug fixes

• Fix address generation from bytes mismatch