• fixed video parsing when the video metadata includes random non-utf-friendly garbage
• fixed video parsing when ffmpeg reports no fps at all
• improved video frame counting accuracy
• thumbnail waterfall process now adapts to the current speed of the cache and can hence use significantly less overhead
• the thumbnail fading process now adapts to the current rendering speed, delivering smooth fade when CPU is available but otherwise skipping frames and more reliably filling in thumbnails within a quarter of a second
• canvases now draw their thumbnails with slightly less overhead
• increased database synchronous pragma to FULL to better safeguard against power loss during multiple-db commit--we'll see if it slows things down too much, and maybe add an option about it
• cleaned up and improved some client gui pubsubs
• made pubsub profile mode far less popup-spammy
• if a profile takes less than 20ms, it now won't be fully printed to the log
• tweaked some more server object maintenance code
• added 'changelog' link to help menu
• updated lz4 library and fixed some old deprecated calls
• misc serverside pubsub cleanup
• misc fixes
• misc refactoring
• misc code cleaning