Plumbing Work

New version up with various adjustments based on feedback from my alpha peeps, along with improvements to collision detection and physics.

• Fix crash when no audio device available.
• Look harder for connected controllers.
• Fix rendering on retina displays? Maybe?
• Letterbox if the screen ratio doesn’t match our ideal ratio.
• Support chunky pixels :)
• Improve player controls.
• Make the bullets less of an eyesore!
• Upgrade from Raylib 3.5 to Raylib 3.7.
• Big refactor of collision detection logic
• Add gravity to the bullets…

Many thanks to all who have sent me feedback, and please keep it coming!