New UI

Hey, just added a little update that updates the UI of the sprite generator. It's very much inspired by the sword maker by SnoopethTheDuck. I encourage you to check that one out, I really like it. Anyway I think this UI is a lot better than the old one.

Also I added some extra functionality to create non-symmetric sprites based on a slider, I can create some pretty weird results. Hope you have fun with it!