Update 0.15

Hey gamblers, here's today's update!

• Board item: Gun
• Enemy changes:
  • Spiders and slimes now spawn randomly around the board. Spiders will come from any direction and slimes will spawn generally towards the center.
  • Enemy size is now slightly randomized

• Game balancing:
  • Medals now make the game harder
    • Slimes steal more points based on medals
    • Rent goes up by more based on medals
  • You can press S or Up on the Dpad to shoot yourself and earn some points. (Deals 1 damage, gives 300 points)
• Many minor changes/bug fixes