* update changelog
* Update changelog
- less detail about internal stuff like the `mempool`
- focus BUG FIX entries more on what was fixed rather than how
* minor cleanup.
- remove entry for GenesisDocProvider, it's being undone
* minor fix
* bump ABCIVersion due to renaming BlockSizeParams -> BlockParams
(https://github.com/tendermint/tendermint/pull/3417#discussion_r264974791)
* Move changelog on consensus params entry to breaking
* Add @melekes' suggestion for breaking change in pubsub into upgrading.md
* Add changelog entry for #3351
* Add changelog entry for #3358 & #3359
* Add changelog entry for #3397
* remove changelog entry for #3397 (was already released in 0.30.2)
* move 3351 to improvements
* Update changelog comment