Mob controller controls if mob should run or not, so remove the distance
checks from the speed calculations. Rework GetSpeed to UpdateSpeed. Mobs
only need to update their speed during pathfinding, and players only for
update packets, so this allows us to read speed without necessarily
recalculating.
Expand arenaDrawIn to handle all draw-in functions.
Mixins created for mimics and "standard" draw-in that
triggers when out of melee range. Boundaries, ranges,
timing, etc aren't verified.
Adds standback range mod for mobs.
A lot of mobs in the game have different stand back ranges, specifically a lot of NMs.
This will allow us to apply the range needed for proper standback.
* Follow logic now uses the new mob:follow() method
* Greatly simplified due to parameters not being necessary/unused
* Created a follow mixin to simplify adding follow logic to mobs
* Added concept of LEADER mob modifier to use negative numbers to indicate which mob to follow
* Added Omxzomit script since it also has followers
