Updated box art... again

Not really much of an announcement but I updated the box art again as the other one was too blank and poorly drawn to be any good.

About the game, while not available in the demo version, there is planned support for the DMG (original) Game Boy as well as a Super Game Boy exclusive border. This means that many areas of the game had to be modified in order to work on DMG Game Boy hardware.

Update to post: the other box art designs have been added.