message: chore: CHANGELOG for v0.104.0
diff: +# [v0.104.0](https://github.com/nervosnetwork/ckb/compare/v0.103.0...v0.104.0) (2022-07-19)
  +
  +### Features
  +
  +* #3329: Background update block_template (@zhangsoledad)
  +* #3427: Remove compatibility codes from the network (@driftluo)
  +* #3438: Remove snapshot compatible code (@driftluo)
  +* #3479: Log in utc time (@zhangsoledad)
  +
  +### Bug Fixes
  +
  +* #3387 **rpc:** Disconnect session of peers when invoke rpc set_ban (@chanhsu001)
  +* #3417: Fix typo for hash_type note (@DGideas)
  +* #3426: Runtime shutdown (@zhangsoledad)
  +* #3445: Ambiguous dao error messages (@zhangsoledad)
  +
  +### Improvements
  +
  +* #3391: Improve sync header map (@zhangsoledad)
  +* #3478: Perf sync (@driftluo)
  +
  # [v0.103.0](https://github.com/nervosnetwork/ckb/compare/v0.101.8...v0.103.0) (2022-04-11)
  ### Features
  