more bugfixes (hopefully)! a new tutorial! custom song support!

fixed (hopefully) a bug reported by @Denneisk where the music would cut out even if you continued to bhop (see bug reports discussion for more)

added some settings, find them in utilities. unfortunately custom songs aren't that possible, so i've added some extra song choices to make up for it. enjoy the new update!

fixed a bug where the song would still play after not jumping

Initial addon creation.