Version 3.3.0

This update makes surround upmix work for every track, removes the remaining start-up lag, and stops the music pausing over silent videos.

Fixes

• ThemeDeck audio no longer goes silent when 7.1 upmix is enabled. The localhost audio stream now enters WebAudio with the required cross-origin mode. The player also keeps its native stereo output until a running multichannel context is available, so a blocked or unsupported WebAudio context can no longer mute ambient, Store or game music.
• Music no longer stops for silent videos. Muted Store trailers and silent SteamGridDB animated artwork no longer pause the music. Playback is only interrupted by video that is actually producing sound (an unmuted trailer or the Big Picture startup movie), which still pauses and then resumes the music.