Glad to hear you enjoyed it!
I'm currently in the middle of redoing the controls entirely with a better remapping menu, that should be fixed next update. I'm pretty close to a 5.2, when I get some more free time I should be able to finish that quickly and drop it here. As for erasing your save data I don't have an option for that yet but I'll add one soon. For now you'll have to go to the %appdata% folder and delete it but I'll add that option next update!