V 1.1 - Catcher Update

This update features Catcher Zombies, who can catch any head that's thrown at them and throw it back at you! They can still be killed by a head if it was from behind, or if they were still holding a head prior. Heads thrown by these catchers are marked in bright-red.

Other changes include:

- Changed classic and catcher zombie speeds from 1.5 to 2
- Change spawn delay for each zombie from 0.7 to 0.65
- You can now hit multiple zombies in a single bat swing. Previously, you were only allowed to kill 1.
- Hitting a head as it's flying will now shake the camera (Yes, you could  still hit flying heads prior to this update).