* moves the brain component to living-level. Makes some tweaks to NPC AI so they know they're being attacked by something
* that took a lot more than I expected to fix the melee
* adds the weapon throw attack. Fixes where you could only ever have one attack type for your NPC. Fixes a bad usr argument in throw.
* /*DOES NOT WORK*/
Changes mob function so it uses a movement component, rather than it being under the mob component.
Adds the Astar mob movement component.
Adds Receive and Return signal handling. moves get def zone to this system.
* movement through astar now works.
* cleanup of debug
* Damians requested changes
* That doesn't work.
* Initial work on component mobs.
* Revert simple_animal.dm
* Fix movement.
* Component signals are now #defines.
* Fix magic number in atmos.dm
* Added basic melee attacks.
* Get rid of test spam
