Quick fix for the quit button.

First of all, thank you to everyone who bought the game. I'm an indie developer with very little free time, and seeing the support is really comforting. I fixed the bug that didn’t allow the game to be closed with the X. If you have feedback, I’d really appreciate it and I’ll keep updating the game little by little. I don’t have much free time because of my current job, but I’ll try to add the ideas you have into the game.