added an HDCD decoder DSP filter
added catalog number and barcode fields to tag editor
added file type associations to macOS app, so fre:ac is offered for opening audio files
added quality (VBR) setting to FDK-AAC configuration dialog
improved MP3, AAC and Opus encoding performance by up to 30%
improved multi-monitor support on X11 based systems
discs of multi-disc albums are now shown separately in tag editor album mode
update only changed fields when making edits in tag editor album mode
added support for Replay Gain values in MP4 and WMA metadata
do not override settings with default values when using freaccmd s config option