The map zoom work is basically complete and I marked it as so in the roadmap. So now I’m back with the Editor to add the last functional element to it, the Undo/Redo operations...

I have already done half of the work, in that regard. There are two new buttons on the editor toolbar that let you undo and redo, and I also added two keyboard shortcuts, Crtl-Z, and Shift-Ctrl-Z, to perform the same operations respectively. Here’s a small preview of what I think will be the final version of the toolbar: