### New features
* [#267](https://github.com/rubocop/rubocop-performance/pull/267): Add new `Performance/ConcurrentMonotonicTime` cop. ([@koic][])
### Bug fixes
* [#261](https://github.com/rubocop/rubocop-performance/issues/261): Fix a false negative for `Performance/RedundantBlockCall` when using `block.call` in a class method'. ([@koic][])
* [#264](https://github.com/rubocop/rubocop-performance/pull/264): Fix error in Performance/Sum when method has no brackets. ([@mvz][])
### Changes
* [#263](https://github.com/rubocop/rubocop-performance/pull/263): Unmark `AutoCorrect: false` from `Performance/StringInclude`. ([@koic][])
[@koic]: https://github.com/koic
[@mvz]: https://github.com/mvz
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