Create an Undo History Module

Summary

The Duality editor has full Undo / Redo support, but the only way to access it is via Ctrl + Z / Ctrl + Y shortcuts and a menu entry. It would be much cooler if there was a full "History" module showing the complete list of Undo / Redo steps and allowing to revert back to an old state with one click. For reference, maybe something along the lines of the Photoshop or Gimp undo history.

Analysis

• This feature can easily be done in its own editor plugin, no changes to the core or editor are required for this.