Just tried out the latest nightly and damn it works good
only issue I have is that it doesn't save the directories (I have the one for fie browsing set to SD:/ROMs but still starts from SD:/) and it doesn't seem to be saving button remapping for any core, tried with mGBA, remapped, went back to HBL and started mGBA again, same default button layout.
However, it does seem to save settings like audio and video changes like Bilinear Off and 16:9
That's all right now.
Oh and nice little bonus thing, mGBA now runs the DX color hacks without glitches!
Bye bye Gambattle!
EDIT:
I should argument a bit more.
The directory setting ARE saved, the app simply doesn't start on said folder as stated in the configuration. I checked by opening a core and checking the setting, and my specified folder is there still, it's the app which refuses to start looking in said directory.
As for button remapping, that's still not saved though.