### New features

* [#115](https://github.com/rubocop/rubocop-performance/issues/115): Support `String#sub` and `String#sub!` methods for `Performance/DeletePrefix` and `Performance/DeleteSuffix` cops. ([@fatkodima][])

### Bug fixes

* [#111](https://github.com/rubocop/rubocop-performance/issues/111): Fix an error for `Performance/DeletePrefix` and `Performance/DeleteSuffix` cops when using autocorrection with RuboCop 0.81 or lower. ([@koic][])
* [#118](https://github.com/rubocop/rubocop-performance/issues/118): Fix a false positive for `Performance/DeletePrefix`, `Performance/DeleteSuffix`, `Performance/StartWith`, and `Performance/EndWith` cops when receiver is multiline string. ([@koic][])

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