* first pass at text subtitle support
* support text subtitles from movies, music videos and other videos
* fixes
* qsv fixes
* vaapi fixes
* update changelog
* add explicit warning for zero/invalid duration media items
* set dateadded on plex media versions
* add media stream table
* save local media streams to db
* save plex media streams to db
* add preferred language settings (no validation)
* use preferred language if possible
* code cleanup
* proper language code validation
* force scan of all libraries to pull in media streams
Jason Dove