Removed Zone class.
Added optimization todo
Added objects containment to location class.
Added add and remove object methods to Location class.
Added adding and removing of objects from locations on vector set.
Added toString method to Location class.
Added getLocationArea to World, and unit test for method.
Changed getObjects() return type to ArrayList<WorldObject>
Implemented "visible" objects implementation.
Added removeObject method and getObjectCount method.
Fixed miscount due to angle being calculated before state change.
Adding actors to location on world being set.
Added fixes and tests for Actor method getVisibleObjects.
Prototyped new methods for sending actor states.
Moved "name" field to WorldObject from Actor.
Changed "Actor" to "Object"
Added getCurrentDirection method.
Added ActorVisibleMessage
Added "getCurrentAngle" method.
Added getStepsFromLast method.