* Second commit of updates for UNex game
* This version marks the first of those not meant for testing purposes
* Functionality for changing and saving user sensitivity has been implemented
* A new Weapon has been Added: the Shotgun
* Changes have been made to the enemy spawn system to allow for random amounts of enemies to spawn at random spawn points throughout the scene
* Spawning enemies are randomly "Alive" or "Static": the former attacking when provoked, the latter remaining innocuous