message: docs: release notes for the v10.2.1 release
diff: +<a name="10.2.1"></a>
  +## 10.2.1 (2020-10-28)
  +
  +
  +### Bug Fixes
  +
  +* **bazel:** only providing stamping information if the --stamp flag is used ([#39392](https://github.com/angular/angular/issues/39392)) ([ed88407](https://github.com/angular/angular/commit/ed88407))
  +* **core:** do not error when `ngDevMode` is undeclared ([#39415](https://github.com/angular/angular/issues/39415)) ([fcebc83](https://github.com/angular/angular/commit/fcebc83))
  +* **localize:** render placeholder types in extracted XLIFF files ([#39459](https://github.com/angular/angular/issues/39459)) ([ea1baf9](https://github.com/angular/angular/commit/ea1baf9)), closes [#38791](https://github.com/angular/angular/issues/38791)
  +* **localize:** serialize all the message locations to XLIFF ([#39411](https://github.com/angular/angular/issues/39411)) ([db51de8](https://github.com/angular/angular/commit/db51de8)), closes [#39330](https://github.com/angular/angular/issues/39330)
  +* **ngcc:** capture UMD/CommonJS inner class implementation node correctly ([#39346](https://github.com/angular/angular/issues/39346)) ([bdaa714](https://github.com/angular/angular/commit/bdaa714))
  +
  +
  +
  <a name="11.0.0-rc.0"></a>
  # 11.0.0-rc.0 (2020-10-21)
  