yeah it should be possible, but sorry no documentation for that right now. I will extend the editor for the combat animations some time soon, hopefully this year.
not in the demo scene currently, i implemented a mechanic to swap outfits easily in my game. When i finished the character custuomisation in the game i may transfer it to the sample scene in the asset, but it will take some time
I uploaded a new Version with presliced empty sprites to use, so you don't have to slice all the sprites... Because: ALL the sprites, even the empty ones have to be present and sliced!!!