I put out an update yesterday that was mostly devoted to fixing a crash with the tutorial and moving everything over to Ren'Py 8! There's also some support for rebindable keys in a config file, it's not ideal but it's better than what was there before. The next update will have something a little friendlier to work with on that. But yeah, the Ren'Py 8 move was fun with how much I am relying on loading text files
Also if you are a linux user, please let me know about any problems since this update was in part a response to hearing that some of the keys didn't work in that version