Fix intermittent crash to desktop on preview
Fix some fonts not being applied properly without program restart
Fix some fonts not being re-applied properly on program startup
Tweak UI layout to remove excessive dead-space/padding
Add missing tooltips to main window buttons
Eliminate UI hang when doing rotation/queue modifications with ticker enabled
Generally improve ticker performance
Fix incorrect queue song sometimes being marked as played when starting a karaoke song while another was currently playing
Fix gstreamer message callbacks being assigned multiple times
Massively speed up db updates for libraries with loose audio and cdg files in very large directories
Improved debug logging
Refactored large amounts of code to improve efficiency and reduce resource utilization
Many small bugfixes