New release ready with the last big feature - custom puzzles! 

Custom puzzles can now be created from files on disk or using a valid URL to an image online. They are automatically saved same way as regular puzzles.

This is one of the last major feature that was missing, so I can almost call this a beta. 
One more feature (I'm not 100% sure if I should include it) is customizing tabs/blanks (the bits on the side of the pieces) that are used to generate puzzles.

I want to focus on UI/UX now and finally build a steam page.

Any feedback welcomed - especially if any bugs/weird issues pop up.