Unfinished Picross Game

Here are the remains of a Picross game I was making one time. I kinda forgot why I stopped working on it as it was like a year or two ago, but I think it was because of university and definitely because the code got really messy and hard to work with. Figured I'd let this loose in the open as this is the most playable of my unfinished business.

Features include...
* 6 premade puzzles, 5 being original
* Fairly intuitive and polished controls
* A puzzle creator with codes you can share
* The "I" key enables debug mode and I forgot what it did