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Add React 16.3.0 changelog #12488

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Add React 16.3.0 changelog #12488

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54 changes: 53 additions & 1 deletion CHANGELOG.md
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Expand Up @@ -4,25 +4,77 @@
Changes that have landed in master but are not yet released.
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</summary>
</details>

## 16.3.0 (March 29, 2018)

### React

* Add a new `React.createRef()` API as an ergonomic alternative to callback refs. ([@trueadm](https://github.com/trueadm) in [#12162](https://github.com/facebook/react/pull/12162))
* Add a new `React.forwardRef()` API to let components forward their refs to a child. ([@bvaughn](https://github.com/bvaughn) in [#12346](https://github.com/facebook/react/pull/12346))
* Fix a false positive warning in IE11 when using `React.Fragment`. ([@XaveScor](https://github.com/XaveScor) in [#11823](https://github.com/facebook/react/pull/11823))
* Replace `React.unstable_AsyncComponent` with `React.unstable_AsyncMode`. ([@acdlite](https://github.com/acdlite) in [#12117](https://github.com/facebook/react/pull/12117))
* Improve the error message when calling `setState()` on an unmounted component. ([@sophiebits](https://github.com/sophiebits) in [#12347](https://github.com/facebook/react/pull/12347))

### React DOM

* Add a new officially supported context API. ([@acdlite](https://github.com/acdlite) in [#11818](https://github.com/facebook/react/pull/11818))
* Add a new `getDerivedStateFromProps()` lifecycle and `UNSAFE_` aliases for the legacy lifecycles. ([@bvaughn](https://github.com/bvaughn) in [#12028](https://github.com/facebook/react/pull/12028))
* Add a new `getSnapshotForUpdate()` lifecycle. ([@bvaughn](https://github.com/bvaughn) in [#12404](https://github.com/facebook/react/pull/12404))
* Add a new `<React.StrictMode>` wrapper to help prepare apps for async rendering. ([@bvaughn](https://github.com/bvaughn) in [#12083](https://github.com/facebook/react/pull/12083))
* Add support for `onLoad` and `onError` events on the `<link>` tag. ([@roderickhsiao](https://github.com/roderickhsiao) in [#11825](https://github.com/facebook/react/pull/11825))
* Add support for `noModule` boolean attribute on the `<script>` tag. ([@aweary](https://github.com/aweary) in [#11900](https://github.com/facebook/react/pull/11900))
* Fix minor DOM input bugs in IE and Safari. ([@nhunzaker](https://github.com/nhunzaker) in [#11534](https://github.com/facebook/react/pull/11534))
* Correctly detect Ctrl + Enter in `onKeyPress` in more browsers. ([@nstraub](https://github.com/nstraub) in [#10514](https://github.com/facebook/react/pull/10514))
* Fix containing elements getting focused on SSR markup mismatch. ([@koba04](https://github.com/koba04) in [#11737](https://github.com/facebook/react/pull/11737))
* Fix `value` and `defaultValue` to ignore Symbol values. ([@nhunzaker](https://github.com/nhunzaker) in [#11741](https://github.com/facebook/react/pull/11741))
* Fix refs to class components not getting cleaned up when the attribute is removed. ([@bvaughn](https://github.com/bvaughn) in [#12178](https://github.com/facebook/react/pull/12178))
* Throw with a meaningful message if the component runs after jsdom has been destroyed. ([@gaearon](https://github.com/gaearon) in [#11677](https://github.com/facebook/react/pull/11677))
* Don't crash if there is a global variable called `opera` with a `null` value. [@alisherdavronov](https://github.com/alisherdavronov) in [#11854](https://github.com/facebook/react/pull/11854))
* Don't check for old versions of Opera. ([@skiritsis](https://github.com/skiritsis) in [#11921](https://github.com/facebook/react/pull/11921))
* Deduplicate warning messages about `<option selected>`. ([@watadarkstar](https://github.com/watadarkstar) in [#11821](https://github.com/facebook/react/pull/11821))
* Deduplicate warning messages about invalid callback. ([@yenshih](https://github.com/yenshih) in [#11833](https://github.com/facebook/react/pull/11833))
* Deprecate `ReactDOM.unstable_createPortal()` in favor of `ReactDOM.createPortal()`. ([@prometheansacrifice](https://github.com/prometheansacrifice) in [#11747](https://github.com/facebook/react/pull/11747))
* Don't emit User Timing entries for context types. ([@abhaynikam](https://github.com/abhaynikam) in [#12250](https://github.com/facebook/react/pull/12250))
* Improve the error message when context consumer child isn't a function. ([@raunofreiberg](https://github.com/raunofreiberg) in [#12267](https://github.com/facebook/react/pull/12267))
* Improve the error message when adding a ref to a functional component. ([@skiritsis](https://github.com/skiritsis) in [#11782](https://github.com/facebook/react/pull/11782))

### React DOM Server

* Prevent an infinite loop when attempting to render portals with SSR. ([@gaearon](https://github.com/gaearon) in [#11709](https://github.com/facebook/react/pull/11709))
* Warn if a class doesn't extend `React.Component`. ([@wyze](https://github.com/wyze) in [#11993](https://github.com/facebook/react/pull/11993))
* Fix an issue with `this.state` of different components getting mixed up. ([@sophiebits](https://github.com/sophiebits) in [#12323](https://github.com/facebook/react/pull/12323))
* Provide a better message when component type is undefined. ([@HeroProtagonist](https://github.com/HeroProtagonist) in [#11966](https://github.com/facebook/react/pull/11966))

</details>
## React Test Renderer

* Fix handling of fragments in `toTree()`. ([@maciej-ka](https://github.com/maciej-ka) in [#12107](https://github.com/facebook/react/pull/12107) and [@gaearon](https://github.com/gaearon) in [#12154](https://github.com/facebook/react/pull/12154))
* Shallow renderer should assign state to `null` for components that don't set it. ([@jwbay](https://github.com/jwbay) in [#11965](https://github.com/facebook/react/pull/11965))
* Shallow renderer should filter legacy context according to `contextTypes`. ([@koba04](https://github.com/koba04) in [#11922](https://github.com/facebook/react/pull/11922))
* Add an unstable API for testing asynchronous rendering. ([@acdlite](https://github.com/acdlite) in [#12478](https://github.com/facebook/react/pull/12478))

### React Is (New)

* First release of the [new package](https://github.com/facebook/react/tree/master/packages/react-is) that libraries can use to detect different React node types. ([@bvaughn](https://github.com/bvaughn) in [#12199](https://github.com/facebook/react/pull/12199))
* Add `ReactIs.isValidElementType()` to help higher-order components validate their inputs. ([@jamesreggio](https://github.com/jamesreggio) in [#12483](https://github.com/facebook/react/pull/12483))

### React Lifecycles Compat (New)

* First release of the [new package](https://github.com/facebook/react/tree/master/packages/react-lifecycles-compat) to help library developers target multiple versions of React. ([@bvaughn](https://github.com/bvaughn) in [#12105](https://github.com/facebook/react/pull/12105))

### Create Subscription (New)

* First release of the [new package](https://github.com/facebook/react/tree/master/packages/react-lifecycles-compat) to subscribe to external data sources safely for async rendering. ([@bvaughn](https://github.com/bvaughn) in [#12325](https://github.com/facebook/react/pull/12325))

### React Reconciler (Experimental)

* Expose `react-reconciler/persistent` for building renderers that use persistent data structures. ([@gaearon](https://github.com/gaearon) in [#12156](https://github.com/facebook/react/pull/12156))
* Pass host context to `finalizeInitialChildren()`. ([@jquense](https://github.com/jquense) in [#11970](https://github.com/facebook/react/pull/11970))
* Remove `useSyncScheduling` from the host config. ([@acdlite](https://github.com/acdlite) in [#11771](https://github.com/facebook/react/pull/11771))

### React Call Return (Experimental)

* Fix a crash on updates. ([@rmhartog](https://github.com/rmhartog) in [#11955](https://github.com/facebook/react/pull/11955))

## 16.2.0 (November 28, 2017)

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