Added the convar crowd_panic_enabled that when disabled turns off the addon

Fixed a problem with DropWeapon

Added crowd_panic_sounds convar that stops npcs from making noise when on 0

Fixed another nil value

Fixed a nil issue

Fixed another nil issue

Added crowd_panic_refugees convar to enable or disable the panicking system on refugees

Fixed an issue in the damage detection

Fixed an issue with the bullet detection

Fixed issues where citizens scared themselves upon shooting