I have made important changes in the "Leader Following" and "Arrive" behaviours in order to improve the implementation. I have added a new "auxiliary" behaviour: "Slow". Because of that changes at "Leader Following" and "Arrive" behaviours I had to make some changes at "AbstractStrengthSteeringBehaviour" and "CompoundSteeringBehaviour".

I have improved and/or fixed some issues at "Agent", "SimpleMainBehaviour", "BalancedCompoundSteeringBehaviour", "EvadeBehaviour" and "PursuitBehaviour" source files, making some minor changes.