Implemented in 0.10, wasn't that complex of logic. Reworked the mod too so from now on, don't need to re-apply for most updates.
I'd like to add settings UI, was thinking in the game's own options menu, add a tab. Wouldn't require a restart of the game, but would be a bit painful to implement. my godot knowledge isn't the best. I kinda hope I can copy chunks of options.tscn, make up my own options panel, load that, then add it as a child of the existing options panel and have it work.