Swarm Flyers

Custom attacks for boids definable in config.
Now caches nearby solid and liquid blocks for obstacle avoidance. 
Repelling force provided by cached blocks to better allow emergant obstacle avoidance.
Waypoint height offset removed.
Patrol waypoints are now Y limited relative to the closest player to maintain sim distance to prevent unloading themselves.
Fatigue system for landing, non-dangerous blocks repell less the more fatigue a boid has.
Waypoint health system, regens waypoints early if health is reduced to 0 by occupying boids. 
Occasional land based waypoints to help fatigued boids rest. 
Boids are now repelled by players if they do not target players. This includes reseting thier fatigue to simulate "spooking".
Many new commands for adjusting and testing boids.