Hey guys, I have added a bit of UNDO/REDO functionality to the pixel editor. While right now you can hit CTRL-Z and CTRL-Y to undo/redo, it is just a pixel at a time. In version PI(3.1.4) I added functionality to undo/redo actions, so if you paste a rectangle, and hit undo, the whole thing goes back at once. This feels a whole lot cleaner to me. I also increased the undo buffer from 2000 pixels to 20000 pixels.