select movie/tv-show meta entry with doubleclick from mutiple selection window
save last selected metadata source
fix exception on metadata window load
add optional ffmpeg scaling instead of avisynth
ffsource decode threads limit is now optional
update language files
fix ffmpeg padding
fix progress report glitch for ac3 encoding
use 7zip compression for updates
save last selected metadata source (fix)
remove SharpZipLib dependencies
update changelog