0.8.4 Minor bug fixes based on Gooby's hilarious Youtube play-through: https://www.youtube.com/watch?v=7ySyPgG4Pr8&t=13s  (cheers again dude)

• Mouse sensitivity reduced at start, still have slider in options to adjust
• Added mesh colliders to ceilings to avoid Demon bouncing you out of dungeon
• Crates and Barrels now have a small chance to spawn a random item, other than potion.
• Increased size of bounding box on crates and barrels. now easier to target to break
• Gold now easier to target and pick up, also added animation
• Moved start portal sprite closer to wall to avoid visual glitch
• Moved FPS counter from secret developer debug screen to main game screen.