Added ModelManager::onAgentUnlinkedFromModel, overwritten by managers subclasses. This allows proper deletin of LocationModelManager debug lines upon model deletion.
Added applyCentralImpulse & applyCentralForce to PhysicsModel, damping and friction de/serialization and handling, and a couple shortcuts to those properties in Agent
Added a debug flag in BTModel, to control an agent's debug mode
Added support for a custom color in DynamicLines
Physic world's gravity now saved into level params
Moved MT_BT to last model type position
BTNavigator now moves its agent through its physics model. Also added debug lines for target and current impulse applied
Fixed crash upon looking for a location which agent is being deleted
Fixed maxLoops attribute deserialization as uint with signed value
Documentation update
Updated AgentSpec to current API
Removed unused class AgentSpec