message: chore: update CHANGELOG for v0.7.0
diff: @@ -2,6 +2,34 @@ All notable changes to this project will be documented in this file.
  See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
  +# [v0.7.0](https://github.com/nervosnetwork/ckb/compare/v0.6.0...v0.7.0) (2019-03-25)
  +
  +
  +This version requires Rust 1.33.0.
  +
  +### Bug Fixes
  +
  +* remove use of upgradable reads ([#310](https://github.com/nervosnetwork/ckb/issues/310)) ([f9e7f97](https://github.com/nervosnetwork/ckb/commit/f9e7f97))
  +* `block_assembler` selects invalid uncle during epoch switch ([05d29fc](https://github.com/nervosnetwork/ckb/commit/05d29fc))
  +* **miner:** uncles in solo mining ([abe7a8b](https://github.com/nervosnetwork/ckb/commit/abe7a8b))
  +
  +
  +### Features
  +
  +* use toml for miner and chain spec ([#311](https://github.com/nervosnetwork/ckb/issues/311)) ([4b87df3](https://github.com/nervosnetwork/ckb/commit/4b87df3))
  +* move config `txs_verify_cache_size` to section `tx_pool` ([06a0b3c](https://github.com/nervosnetwork/ckb/commit/06a0b3c))
  +* Use blake2b as the hash function uniformly ([6a42874](https://github.com/zhangsoledad/ckb/commit/6a42874))
  +* refactor: avoid multiple lock ([d51c197](https://github.com/nervosnetwork/ckb/commit/d51c197))
  +* refactor: rename `txo_set` -> `cell_set` ([759eea1](https://github.com/nervosnetwork/ckb/commit/759eea1))
  +* refactor: txs verify cache required ([79cec0a](https://github.com/nervosnetwork/ckb/commit/79cec0a))
  +
  +### BREAKING CHANGES
  +
  +* Use TOML as config file format. Please copy and use the new TOML config file templates.
  +* Move `txs_verify_cache_size` to section `tx_pool`.
  +* Change miner config `poll_interval` unit from second to millisecond.
  +
  +
  # [v0.6.0](https://github.com/nervosnetwork/ckb/compare/v0.5.0...v0.6.0) (2019-02-25)
  ### Bug Fixes
  