docs(changelog): add changelog for 2.3.1

Author: vicb

CHANGELOG.md

@@ -1,3 +1,52 @@
+<a name="2.3.1"></a>
+## [2.3.1](https://github.com/angular/angular/compare/2.3.0...2.3.1) (2016-12-15)
+
+
+### Bug Fixes
+
+* **animations:** always cleanup players after they have finished internally ([#13334](https://github.com/angular/angular/issues/13334)) ([a26e054](https://github.com/angular/angular/commit/a26e054)), closes [#13333](https://github.com/angular/angular/issues/13333)
+* **animations:** throw errors and normalize offset beyond the range of [0,1] ([6557bc3](https://github.com/angular/angular/commit/6557bc3)), closes [#13348](https://github.com/angular/angular/issues/13348) [#13440](https://github.com/angular/angular/issues/13440)
+* **compiler:** emit quoted object literal keys if the source is quoted ([ecfad46](https://github.com/angular/angular/commit/ecfad46)), closes [#13249](https://github.com/angular/angular/issues/13249) [#13356](https://github.com/angular/angular/issues/13356)
+* **compiler:** fix merge error in compiler_host ([69b52eb](https://github.com/angular/angular/commit/69b52eb))
+* **compiler:** fix PR 13322 ([#13331](https://github.com/angular/angular/issues/13331)) ([79728b4](https://github.com/angular/angular/commit/79728b4))
+* **compiler:** fix simplify a reference without a name ([1c279b3](https://github.com/angular/angular/commit/1c279b3)), closes [#13470](https://github.com/angular/angular/issues/13470)
+* **compiler:** fix transpiled ES5 code ([#13322](https://github.com/angular/angular/issues/13322)) ([6c1d790](https://github.com/angular/angular/commit/6c1d790)), closes [#13301](https://github.com/angular/angular/issues/13301)
+* **compiler:** generated CSS files suffixed with ngstyle. ([#13353](https://github.com/angular/angular/issues/13353)) ([c8a9b70](https://github.com/angular/angular/commit/c8a9b70)), closes [#13141](https://github.com/angular/angular/issues/13141)
+* **compiler:** make sure provider values with `name` property don’t break. ([efa2d80](https://github.com/angular/angular/commit/efa2d80)), closes [#13394](https://github.com/angular/angular/issues/13394) [#13445](https://github.com/angular/angular/issues/13445)
+* **compiler:** narrow the span reported for invalid pipes ([307d305](https://github.com/angular/angular/commit/307d305)), closes [#13326](https://github.com/angular/angular/issues/13326) [#13411](https://github.com/angular/angular/issues/13411)
+* **compiler:** propagate exports when upgrading metadata to v2 ([f6ef7d6](https://github.com/angular/angular/commit/f6ef7d6))
+* **compiler:** resolver should merge host bindings and listeners ([#13474](https://github.com/angular/angular/issues/13474)) ([6aeaca3](https://github.com/angular/angular/commit/6aeaca3)), closes [#13327](https://github.com/angular/angular/issues/13327)
+* **compiler:** support dotted property binding ([8db184d](https://github.com/angular/angular/commit/8db184d)), closes [angular/flex-layout#34](https://github.com/angular/flex-layout/issues/34)
+* **compiler:** update to metadata version 3 ([#13464](https://github.com/angular/angular/issues/13464)) ([b9b557c](https://github.com/angular/angular/commit/b9b557c))
+* **core:** detectChanges() doesn't work on detached instance ([4d6ac9d](https://github.com/angular/angular/commit/4d6ac9d)), closes [#13426](https://github.com/angular/angular/issues/13426) [#13472](https://github.com/angular/angular/issues/13472)
+* **core:** properly destroy embedded Views attatched to ApplicationRef ([#13459](https://github.com/angular/angular/issues/13459)) ([d40bbf4](https://github.com/angular/angular/commit/d40bbf4)), closes [#13062](https://github.com/angular/angular/issues/13062)
+* **dom_adapter:** remove logError from logGroup ([#12925](https://github.com/angular/angular/issues/12925)) ([5fab871](https://github.com/angular/angular/commit/5fab871))
+* **forms:** ensure `select[multiple]` retains selections ([b3dcff0](https://github.com/angular/angular/commit/b3dcff0)), closes [#12527](https://github.com/angular/angular/issues/12527) [#12654](https://github.com/angular/angular/issues/12654)
+* **forms:** fix Validators.min/maxLength with FormArray ([#13095](https://github.com/angular/angular/issues/13095)) ([7383e4a](https://github.com/angular/angular/commit/7383e4a)), closes [#13089](https://github.com/angular/angular/issues/13089)
+* **forms:** introduce checkbox required validator ([124267c](https://github.com/angular/angular/commit/124267c)), closes [#11459](https://github.com/angular/angular/issues/11459) [#13364](https://github.com/angular/angular/issues/13364)
+* **http:** check response body text against undefined ([#13017](https://github.com/angular/angular/issues/13017)) ([f106a18](https://github.com/angular/angular/commit/f106a18))
+* **http:** create a copy of headers when merge options ([#13365](https://github.com/angular/angular/issues/13365)) ([65c9b5b](https://github.com/angular/angular/commit/65c9b5b)), closes [#11980](https://github.com/angular/angular/issues/11980)
+* **language-service:** correctly type `undefined` ([0a7364f](https://github.com/angular/angular/commit/0a7364f)), closes [#13412](https://github.com/angular/angular/issues/13412) [#13414](https://github.com/angular/angular/issues/13414)
+* Better error when directive not listed in NgModule.declarations ([b0cd514](https://github.com/angular/angular/commit/b0cd514))
+* Better instructions on running examples and their tests ([203cc7e](https://github.com/angular/angular/commit/203cc7e))
+* **language-service:** treat string unions as strings ([#13406](https://github.com/angular/angular/issues/13406)) ([14dd2b3](https://github.com/angular/angular/commit/14dd2b3)), closes [#13403](https://github.com/angular/angular/issues/13403)
+* **router:** add support for query params with multiple values ([e4d5a5f](https://github.com/angular/angular/commit/e4d5a5f)), closes [#11373](https://github.com/angular/angular/issues/11373)
+* **router:** Use T type in Resolve interface ([#13242](https://github.com/angular/angular/issues/13242)) ([5ee8155](https://github.com/angular/angular/commit/5ee8155))
+* **selector:** SelectorMatcher match elements with :not selector ([#12977](https://github.com/angular/angular/issues/12977)) ([392c9ac](https://github.com/angular/angular/commit/392c9ac))
+* **tsc-wrapped:** generate metadata for exports without module specifier ([cd03c77](https://github.com/angular/angular/commit/cd03c77)), closes [#13327](https://github.com/angular/angular/issues/13327)
+* **upgrade:** fix downgrade content projection and injector inheritance ([86c5098](https://github.com/angular/angular/commit/86c5098)), closes [#6629](https://github.com/angular/angular/issues/6629) [#7727](https://github.com/angular/angular/issues/7727) [#8729](https://github.com/angular/angular/issues/8729) [#9643](https://github.com/angular/angular/issues/9643) [#9649](https://github.com/angular/angular/issues/9649) [#12675](https://github.com/angular/angular/issues/12675)
+
+
+### Features
+
+* **upgrade:** enable Angular 1 unit testing of upgrade module ([2fc0560](https://github.com/angular/angular/commit/2fc0560)), closes [#5462](https://github.com/angular/angular/issues/5462) [#12675](https://github.com/angular/angular/issues/12675)
+
+
+### Performance Improvements
+
+* **animations:** always run the animation queue outside of zones ([e2622ad](https://github.com/angular/angular/commit/e2622ad)), closes [#13440](https://github.com/angular/angular/issues/13440)
+
+
 <a name="2.3.0"></a>
 # [2.3.0](https://github.com/angular/angular/compare/2.3.0-rc.0...2.3.0) (2016-12-07)