Key signatures other than C can be supported, using the K: directive. See songbook.config for the mapping. (Only C and Am are provided currently, but please add more) Support for ties has been added. With big thanks to Tatharnuar for detailed bugreports and testcases.
Awesome work Bartwe, I hope this makes a lot of the .abc files play better, some are really good, but play terribly in game at this time.
This was Bartwe trying to figure this out on his twitch stream. lol The comical moment when he strikes a pose identical to the avatar.