I really want the ability to save playlists 
I’ve been very busy with work lately and only now starting to spend time on these projects again. it’ll be soon as an updated version is required for Musicbox 1.0 (which is even more overdue) but I cannot give you a date.
Don’t stress yourself 
I managed to install it from github and get it working like I want.
There are a few fixes and new features in the develop version on github. Playlist management is number 2 on my list but if you have any other fixes of new features please do share them.
I actually didn’t touch any code at all, just shuffled a few files ^^"