Simple Better Mob AI

Added GROUPS of mobs, ARMOR chance multiplier and ARMORED GROUPS of mobs.
you can decide which mobs can appear in groups the range you want.
you can add modded mobs to spawn with armor or in group or both.
you can make EVERY modded mob spawn in group if they're below x amount of health, 101 by default  (this to avoid summoning 8 bosses by accident).