message: docs: release notes for the v7.2.11 release
diff: +<a name="7.2.11"></a>
  +## [7.2.11](https://github.com/angular/angular/compare/7.2.10...7.2.11) (2019-03-26)
  +
  +This release contains various API docs improvements.
  +
  +
  +
  <a name="8.0.0-beta.9"></a>
  # [8.0.0-beta.9](https://github.com/angular/angular/compare/8.0.0-beta.8...8.0.0-beta.9) (2019-03-20)
  