Minor Update (v0.3.8)

This should hopefully be the final version before I get to implement saving and a new level! Here are the changes:

• Implemented a logo! Thanks a TON to SometimesFunny for the design :3
• Edited Credits page to include her as well :3
• Changed Fullscreen Toggle from a hotkey to a setting in the options menu
• Small adjustment to a jump in Level 1