message: Prepare changelog for v0.10.7
diff: +Changes in [0.10.7](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.10.7) (2017-10-16)
  +=====================================================================================================
  +[Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.10.7-rc.3...v0.10.7)
  +
  + * Update to latest js-sdk
  +
  Changes in [0.10.7-rc.3](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.10.7-rc.3) (2017-10-13)
  ===============================================================================================================
  [Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.10.7-rc.2...v0.10.7-rc.3)
  