v3.6 [Aug 30, 2019]
Added loop button to loop the current song. #25
Added option to show/hide piano. #33
Fixed preferences not saving. #50
Fixed an issue where there was an unintended gradient over sprites. #61
Fixed instrument icons being blank. #62
Fixed typo in preferences. #64
Updated icon. #65
Readded colored note blocks, added option for the shaped ones. #66
NBS format updated to version 3. Now stores song length again. #67
Added MP3 export option to select whether you want to include locked layers. #68
