v1.4: Fixes & Improvements

Well this isn't the expansion I promised, but it includes some changes that will be aprt of the expansion, notably some memory and AI related changed.

Overall experience should be a bit smoother now.

Changelog

• Revolver animation fixed
• Added billboard models for text on walls
• NavMesh doesn't clip through crates in level 2
• Fixed memory leaking issues by removing targetFrameRate being set
• AI now properly navigates to players current position rather than last detected position
• Ranged enemies far less likely to shoot themselves
• Floating platforms on first floor of level 2 lowered to make items more visible
• Removed key for unused input action
• Reduced file size
• Removed input prompt for transitioning to new level