Movement/pathfinding is pretty solid now, aside from door handling.

Door handling has never been coded, but all other pathfinding issues currently
appear to be resolved.

FIXED: Various inconsistincies, pauses, etc in pathfinding
FIXED: Chat now sends new messages right away if there's no queue.
IMPROVED: Pathfinding now has a time limit of 1/10th of a second (configurable).
KNOWN ISSUE: (MoveToBehaviour) Doors are not handled yet, nor seen as obstacles.