V1.1

After some feedback I have made the following updates

• Slightly changed the keyboard controls. Enter is now used for changing weapons, either shift button can be used for boost
• Adjusted difficulty especially in the later levels. Enemy projectiles do less damage, some projectiles are less frequent
• Altered stun effect when player is hit. It now lasts less time and the player is invulnerable for longer
• Fixed the black hole and planet Dingdadongdabundun not showing in windows build