Alpha v0.1.1

What's Changed

• Performed important structural refactoring across the program.
• Replaced most 'throw' statements with asserts
• Combatants and Dynamic Actors will not be drawn if they're offscreen.
• A sound will play when the player reaches critical health. The LifeHud will also turn red
• Implemented a systems in the debug scene where it's now easier to test specific waves.
• Added damage numbers.

Full Changelog: alpha-v0.1.0...v0.1.1