### New features

* [#229](https://github.com/rubocop/rubocop-performance/pull/229): Add new `Performance/MapCompact` cop. ([@koic][])
* [#178](https://github.com/rubocop/rubocop-performance/issues/178): Add new `Performance/SelectMap` cop. ([@koic][])

### Bug fixes

* [#230](https://github.com/rubocop/rubocop-performance/issues/230): Fix a false positive for `Performance/ChainArrayAllocation` when using `Enumerable#lazy`. ([@koic][])

### Changes

* [#228](https://github.com/rubocop/rubocop-performance/pull/228): Mark `Performance/RedundantMerge` as unsafe. ([@dvandersluis][])
* [#232](https://github.com/rubocop/rubocop-performance/pull/232): **(Compatibility)** Drop Ruby 2.4 support. ([@koic][])
* [#235](https://github.com/rubocop/rubocop-performance/pull/235): Require RuboCop 1.7 or higher. ([@koic][])

[@koic]: https://github.com/koic
[@dvandersluis]: https://github.com/dvandersluis
