Automatic 3 player rotation#364

I think a toggle for an automatic rotation (at least for offline) would fit nicely in this game.
I love how quick it is to get games in when playing 1v1s (especially compared to most platfighters), and the player rotation is the only slow part when you have a third player on the setup.
It could also have an option for a “winner stays” -rotation for those who enjoy that :).