Bug Fixes
- animations: ensure consistent transition namespace ordering (#19854) (a58562a)
- common: add right ContentType for boolean values with HttpClient request body(#38924) (#41885) (ae0fa08)
- core: AsyncPipe now compatible with RxJS 7 (#41590) (7a86ebf)
- core: handle multiple i18n attributes with expression bindings (#41912) (345f5c4), closes #41869
- localize: relax error to warning for missing target (#41944) (3150f9f), closes #21690
转自 https://github.com/angular/angular/blob/master/CHANGELOG.md