Propagate 'title' from videoparams to subtitle scanner
Parse year,season and episode from videoparams

Also pass this information along to subtitle scanner
Invoke sub scanner from RTMP player
Parse 'imdbid' from videoparams
Compute hash for thesubdb.com when playing a video file

Result found in req.subdbhash in addSubtitleProvider()-callbacks
Add memfile:// to VFS that expose raw memory as files
If a downloaded subtitle is a ZIP archive, open it and try to find a subtitle inside
Fix broken seeking in FLAC files

Fixes #1435