no empty chests:
fixed typo in red chest callback

no changes, internet was cutting in and out during the last upload so im re-uploading just in case

-added no empty chests
-set some of the included mods to be disabled in the loadlist by default (as opposed to being loaded but not being active)

soundtrack menu:
added extra checks to a StageAPI workaround function

moved extra custom soundtrack stuff to a separate mod so there won't be conflicts/overwriting from mod updates (and makes it a bit simpler)

soundtrack menu:
fixed AB+ code trying to reference something that only exists in repentance

soundtrack menu:
fixed bug with custom lua soundtracks setting a track to use the run start jingles or main menu music

soundtrack menu:
-added the ability to have additional custom soundtrack setups
-fixed a function that was referring to the standalone version

chain drag refactoring

soundtrack menu:
tweaks to check for stageAPI messing with music in non-custom floors