Double-clicking a .mockshot file in Finder opens it
Fixed an issue in the Mac app where opening a .mockshot file from Finder showed an empty document instead of the file.
In the Mac app, double-clicking a .mockshot file in Finder, or choosing Open With → MockShot Studio, opened the app with an empty document. Opening the same file with Open… worked.
Files opened from Finder now load correctly, both when the app is starting and when it is already running. If you have unsaved changes, the app asks before replacing them.