[Telepathy] release: stream-engine 0.3.1

[Dafydd Harries]

Changes:

 - large amounts of refactoring, including separate objects for channels,
   sessions and streams
 - support for multiple simultaneous channels/sessions/streams
 - some support for video streams
 - API changes to allow specifying which stream to manipulate
 - API additions to allow manipulating video streams

This release requires a connection manager implementing spec 0.13.3; namely
Gabble 0.3.2.

http://telepathy.freedesktop.org/releases/stream-engine/telepathy-stream-engine-0.3.1.tar.gz

-- 
Dafydd