choose rule name from list
"open from disk" -> "open from file"
same button used for play/pause
play/pause/stop disabled when non score is loaded
initial changelog
added changelog title
changelog: version 1.0.1
changelog: version 1.0.2
changelog: version 1.0.3
changelog: version 1.0.4
removed "small" from changelog
changelog: version 3.0.0
changelog: version 3.0.1
changelog: version 3.0.2
changelog: current development
added "quickfix" to 1.0.3 out of range issue in changelog