Changelog for 15.2.0

(cherry picked from commit 74c29b3 and  bc1d59e)

CHANGELOG.md

@@ -1,3 +1,45 @@
+## 15.2.0 (July 1, 2016)
+
+### React
+- Add error codes to production invariants, with links to the view the full error text. ([@keyanzhang](https://github.com/keyanzhang) in [#6948](https://github.com/facebook/react/pull/6948))
+- Include component stack information in PropType validation warnings. ([@spicyj](https://github.com/spicyj) in [#6771](https://github.com/facebook/react/pull/6771))
+- Include component stack information in key warnings. ([@keyanzhang](https://github.com/keyanzhang) in [#6799](https://github.com/facebook/react/pull/6799))
+- Stop validating props at mount time, only validate at element creation. ([@keyanzhang](https://github.com/keyanzhang) in [#6823](https://github.com/facebook/react/pull/6823))
+- New invariant providing actionable error in missing instance case. ([@yungsters](https://github.com/yungsters) in [#6990](https://github.com/facebook/react/pull/6990))
+- Add `React.PropTypes.symbol` to support ES2015 Symbols as props. ([@puradox](https://github.com/puradox) in [#6377](https://github.com/facebook/react/pull/6377))
+- Fix incorrect coercion of ref or key that are undefined in development ([@gaearon](https://github.com/gaearon) in [#6880](https://github.com/facebook/react/pull/6880))
+- Fix a false positive when passing other element’s props to cloneElement ([@ericmatthys](https://github.com/ericmatthys) in [#6268](https://github.com/facebook/react/pull/6268))
+
+### React DOM
+- Add warning for unknown properties on DOM elements. ([@jimfb](https://github.com/jimfb) in [#6800](https://github.com/facebook/react/pull/6800), [@gm758](https://github.com/gm758) in [#7152](https://github.com/facebook/react/pull/7152))
+- Properly remove attributes from custom elements. ([@grassator](https://github.com/grassator) in [#6748](https://github.com/facebook/react/pull/6748))
+- Fix invalid unicode escape in attribute name regular expression. ([@nbjahan](https://github.com/nbjahan) in [#6772](https://github.com/facebook/react/pull/6772))
+- Add `onLoad` handling to `<link>` element. ([@roderickhsiao](https://github.com/roderickhsiao) in [#6815](https://github.com/facebook/react/pull/6815))
+- Add `onError` handling to `<source>` element. ([@wadahiro](https://github.com/wadahiro) in [#6941](https://github.com/facebook/react/pull/6941))
+- Handle `value` and `defaultValue` more accurately in the DOM. ([@jimfb](https://github.com/jimfb) in [#6406](https://github.com/facebook/react/pull/6406))
+- Fix events issue in environments with mutated `Object.prototype`. ([@Weizenlol](https://github.com/Weizenlol) in [#6886](https://github.com/facebook/react/pull/6886))
+- Fix issue where `is="null"` ended up in the DOM in Firefox. ([@darobin](https://github.com/darobin) in [#6896](https://github.com/facebook/react/pull/6896))
+- Improved performance of text escaping by using [escape-html](https://github.com/component/escape-html). ([@aickin](https://github.com/aickin) in [#6862](https://github.com/facebook/react/pull/6862))
+- Fix issue with `dangerouslySetInnerHTML` and SVG in Internet Explorer. ([@joshhunt](https://github.com/joshhunt) in [#6982](https://github.com/facebook/react/pull/6982))
+- Fix issue with `<textarea>` placeholders. ([@jimfb](https://github.com/jimfb) in [#7002](https://github.com/facebook/react/pull/7002))
+- Fix controlled vs uncontrolled detection of `<input type="radio"/>`. ([@jimfb](https://github.com/jimfb) in [#7003](https://github.com/facebook/react/pull/7003))
+- Improve performance of updating text content. ([@trueadm](https://github.com/trueadm) in [#7005](https://github.com/facebook/react/pull/7005))
+- Ensure controlled `<select>` components behave the same on initial render as they do on updates. ([@yiminghe](https://github.com/yiminghe) in [#5362](https://github.com/facebook/react/pull/5362))
+
+### React Perf Add-on
+- Add `isRunning()` API. ([@nfcampos](https://github.com/nfcampos) in [#6763](https://github.com/facebook/react/pull/6763))
+- Improve accuracy of lifecycle hook timing. ([@gaearon](https://github.com/gaearon) in [#6858](https://github.com/facebook/react/pull/6858))
+- Fix internal errors when using ReactPerf with portal components. ([@gaearon](https://github.com/gaearon) in [#6860](https://github.com/facebook/react/pull/6860))
+- Fix performance regression. ([@spicyj](https://github.com/spicyj) in [#6770](https://github.com/facebook/react/pull/6770))
+- Add warning that ReactPerf is not enabled in production. ([@sashashakun](https://github.com/sashashakun) in [#6884](https://github.com/facebook/react/pull/6884))
+
+### React CSSTransitionGroup Add-on
+- Fix timing issue with `null` node. ([@keyanzhang](https://github.com/keyanzhang) in [#6958](https://github.com/facebook/react/pull/6958))
+
+### React Native Renderer
+- Dependencies on React Native modules use CommonJS requires instead of providesModule. ([@davidaurelio](https://github.com/davidaurelio) in [#6715](https://github.com/facebook/react/pull/6715))
+
+
 ## 15.1.0 (May 20, 2016)
 
 ### React