v.0.3.0

Bugs:

- Fixed "NullReferenceException: Object reference not set to an instance of an object error" caused by missing object on Level2 scene.

Enhancements:

- Adjusted player rotation speed for better aim control, boosting now affects rotation speed.

- Added pathfinding and enemy combat behaviours. Enemies no longer have x-ray vision, and will try to approach player at last known location.

- Added new enemy game over behaviour. Enemies will try to get out of view when game is over.