Xen Infection

Added three new zombie variants - Evoker: Same as a normal zombie, but can cast spells Creeper: A unique zombie with no gonome variant, blows up when it has a target while on low health. Witch - Same as the normal zombie, but occurs when a witch is infected.

Added Gonarchs - Ranged attack, melee attack, and summon attack. Ranged - Shoots an acid out of the top of it's body Melee - Standard Melee Summon - Gives birth to two baby headcrabs

Added Baby Headcrabs - Grows into a Juvenile Headcrab after 5 minutes Can attack, but can't latch schmol

Added Female Headcrabs - A larger, blueish variant of the headcrab. Formed when a headcrab can't find a host after 15 minutes. Will avoid all mobs, and will attach to the back of a gonome and feast off of it's nutrients for 5 minutes and turns into a gonarch, killing the gonome in the process.

Added gonomes - When a zombie eats 20 items, it grows into a gonome. Big and burly, pretty tough. Can also eat items like a zombie

Bug fixes and other small features