Edit History

A bit like Google Docs's edit history. It would allow you to see recent edits that you've made to your code. It'd be helpful for debugging code. I don't have any idea about the difficulty of implementing it, but it seems like it'd be rather challenging though.

I like this idea, it sure beats ctrl z-ing about 50 times

This would be awesome @giles Please make this. I think this would be good for the code, sprites and everything