0.2.1

This feels like a very minor update because I didn't add anything new but I rewrote almost every system in the game because it was really sloppy and buggy. The game should hopefully feel a lot cleaner and less buggy.

• Made keys respawn after they break (like eggs)
• Added a little fade in effect when you start the game :)
• Rewrote Player behaviors
• Rewrote Egg behaviors
• Recreated UI system
• Recreated levels system