• correctly (de)serialized margin properties. Order is supposed to be LRTB (#120).
  The GUI still shows everything in LTRB order but with the correct values.
• fixed consecutive loads & saves failing (#121).
• implemented the image hotkeys properly (#123).
  It's Ctrl + <Num> now and works from everywhere in the application. I suggest using the control key on the right side of the keyboard for best ergonomics.