message: Prepare changelog for v0.11.0
diff: +Changes in [0.11.0](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.11.0) (2017-11-15)
  +=====================================================================================================
  +[Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.11.0-rc.3...v0.11.0)
  +
  +
  Changes in [0.11.0-rc.3](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.11.0-rc.3) (2017-11-14)
  ===============================================================================================================
  [Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.11.0-rc.2...v0.11.0-rc.3)
  