Retain current file being sliced when changing tabs#452

So I noticed when I was slicing a file within SimplyPrint, that if I change to say the Printers tab to check on my current print, when I go back to the Slicer tab, what I was working on is gone. It would be nice to retain what I was working on.

There’s now a “Restore workspace” option that shows when you exit the slicer with something on the bed :)