v11.0.0-rc.1

Full Changelog

BREAKING CHANGES

• MatrixCall and related APIs have been redesigned to support multiple streams
  (see #1660 for more details)

All changes

• Switch from MSC1772 unstable prefixes to stable
  #1679
• Update the VoIP example to work with the new changes
  #1680
• Bump hosted-git-info from 2.8.8 to 2.8.9
  #1687
• Support for multiple streams (not MSC3077)
  #1660
• Tweak missing m.room.create errors to describe their source
  #1683