This release is primarily about upgrades to the `privval` system -
separating the `priv_validator.json` into distinct config and data files, and
refactoring the socket validator to support reconnections.
See [UPGRADING.md](UPGRADING.md) for more details.
### BREAKING CHANGES:
* CLI/RPC/Config
- [cli] Removed `node``--proxy_app=dummy` option. Use `kvstore` (`persistent_kvstore`) instead.
- [cli] Renamed `node``--proxy_app=nilapp` to `--proxy_app=noop`.
- [config] [\#2992](https://github.com/tendermint/tendermint/issues/2992) `allow_duplicate_ip` is now set to false
- [privval] [\#1181](https://github.com/tendermint/tendermint/issues/1181) Split immutable and mutable parts of `priv_validator.json`
(@yutianwu)
- [privval] [\#2926](https://github.com/tendermint/tendermint/issues/2926) Split up `PubKeyMsg` into `PubKeyRequest` and `PubKeyResponse` to be consistent with other message types
- [privval] [\#2923](https://github.com/tendermint/tendermint/issues/2923) Listen for unix socket connections instead of dialing them