Added 1.2.1 Release notes
Fix potential cross thread exception on map access
Fix / Hack Android playback error on trailer #1305

This is quite hackish, but we dont get a librarySectionUUID from PMS on trailers. On the other hand, PMS doesnt seem to care when the libraryUUID doesnt make sense...
Fix Potential crash issue with extradataloader list & GUI
Reset PlayList Player repeat settings on a new PQ playback.

Fixes Playback of Plex It! Queue items keys off of PQ repeat setting #1324
Set version number to 1.2.2.
Don't call python scripts directly, call with the python binary.

This casued a problem with the windows build slave.
Make trailers playable when avio is enabled.

FFMPEG AVIO does not follow URL redirects, so we need to use the
internal protocols for that.
Added release notes for 1.2.2