### New features

* [#490](https://github.com/rubocop/rubocop-performance/pull/490): Pluginfy RuboCop Performance. ([@koic][])
* [#462](https://github.com/rubocop/rubocop-performance/pull/462): Add new `Performance/ZipWithoutBlock` cop that checks patterns like `.map { |id| [id] }` or `.map { [_1] }` and can replace them with `.zip`. ([@corsonknowles][])

### Bug fixes

* [#484](https://github.com/rubocop/rubocop-performance/pull/484): Fix `Performance/CaseWhenSplat` cop error on `when` node without body. ([@viralpraxis][])

[@koic]: https://github.com/koic
[@corsonknowles]: https://github.com/corsonknowles
[@viralpraxis]: https://github.com/viralpraxis
