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+## 15.6.0 [Unreleased]
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+<details>
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+ <summary>Changed we plan to include in the 15.6.0 release.</summary>
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+
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+### React
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+
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+* Fix bug where performance entries were being cleared. ([@chrisui](https://github.com/chrisui) in [#9451](https://github.com/facebook/react/pull/9451))
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+* Stop adding 'px' to numbers passed for unitless CSS Grid attributes. ([@ericsakmar](https://github.com/ericsakmar) in [#9185](https://github.com/facebook/react/pull/9185))
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+* Deprecate `React.createMixin` helper, which was never used. ([@aweary](https://github.com/aweary) in [#8853](https://github.com/facebook/react/pull/8853))
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+
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+</details>
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+
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## 15.5.4 (April 11, 2017)
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### React Addons
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* **Critical Bugfix:** Update the version of `prop-types` to fix critical bug. ([@gaearon](https://github.com/gaearon) in [545c87f](https://github.com/facebook/react/commit/545c87fdc348f82eb0c3830bef715ed180785390))
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### React Test Renderer
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-* Fix compatibility with Enzyme by exposing `batchedUpdates` on shallow renderer. ([@gaearon](https://github.com/gaearon) in [#9382](https://github.com/facebook/react/commit/69933e25c37cf5453a9ef132177241203ee8d2fd))
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+* Fix compatibility with Enzyme by exposing `batchedUpdates` on shallow renderer. ([@gaearon](https://github.com/gaearon) in [9382](https://github.com/facebook/react/commit/69933e25c37cf5453a9ef132177241203ee8d2fd))
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## 15.5.3 (April 7, 2017)
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**Note: this release has a critical issue and was deprecated. Please update to 15.5.4 or higher.**
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### React
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-* Added a deprecation warning for `React.createClass`. Points users to create-react-class instead. ([@acdlite](https://github.com/acdlite) in [d9a4fa4](https://github.com/facebook/react/commit/d9a4fa4f51c6da895e1655f32255cf72c0fe620e))
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-* Added a deprecation warning for `React.PropTypes`. Points users to prop-types instead. ([@acdlite](https://github.com/acdlite) in [043845c](https://github.com/facebook/react/commit/043845ce75ea0812286bbbd9d34994bb7e01eb28))
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+* Added a deprecation warning for `React.createClass`. Points users to create-react-class instead. ([@acdlite](https://github.com/acdlite) in [#d9a4fa4](https://github.com/facebook/react/commit/d9a4fa4f51c6da895e1655f32255cf72c0fe620e))
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+* Added a deprecation warning for `React.PropTypes`. Points users to prop-types instead. ([@acdlite](https://github.com/acdlite) in [#043845c](https://github.com/facebook/react/commit/043845ce75ea0812286bbbd9d34994bb7e01eb28))
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* Fixed an issue when using `ReactDOM` together with `ReactDOMServer`. ([@wacii](https://github.com/wacii) in [#9005](https://github.com/facebook/react/pull/9005))
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* Fixed issue with Closure Compiler. ([@anmonteiro](https://github.com/anmonteiro) in [#8895](https://github.com/facebook/react/pull/8895))
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* Another fix for Closure Compiler. ([@Shastel](https://github.com/Shastel) in [#8882](https://github.com/facebook/react/pull/8882))