* Made all ghoul movement physics silent
* Buffed Jitterskull's movement distance
* Jitterskull no longer stops when shot unless he is attacking
* Increased Jitterskull's movement delay
* Increased Yurei's starting distance
* Yurei is no longer shootable when invisible
* Decreased the timeframe you can shoot Yurei
* Disabled shadows on spawned NPCs
* Decreased heartbeat sound distance
* Redid lighting calculations on Jitterskull and Creeper