message: docs: add 2.4.9 release notes
diff: +<a name="2.4.9"></a>
  +## [2.4.9](https://github.com/angular/angular/compare/2.4.8...2.4.9) (2017-03-02)
  +
  +
  +### Bug Fixes
  +
  +* **http:** Make ResponseOptionsArgs an interface ([b658fa9](https://github.com/angular/angular/commit/b658fa9)), closes [#13708](https://github.com/angular/angular/issues/13708)
  +* **router:** improve robustness ([#14602](https://github.com/angular/angular/issues/14602)) ([2a12346](https://github.com/angular/angular/commit/2a12346))
  +
  +
  +### Reverts
  +
  +* fix(router): do not finish bootstrap until all the routes are resolved ([#14327](https://github.com/angular/angular/issues/14327)) ([de36f8a](https://github.com/angular/angular/commit/de36f8a)), closes [#14681](https://github.com/angular/angular/issues/14681) [#14588](https://github.com/angular/angular/issues/14588)
  +
  +
  +
  <a name="4.0.0-rc.2"></a>
  ## [4.0.0-rc.2](https://github.com/angular/angular/compare/4.0.0-rc.1...4.0.0-rc.2) (2017-03-02)
  