Let AIPath more extendable

Feature Requests
#1

could you make the following function virtual in the main dev branch ?

protected virtual void Awake()
protected virtual void Start()
protected virtual void SearchPath()
protected virtual void OnPathComplete()

#2

Sure!
Added to the main dev branch. Also made a few other functions virtual.
Moving this to the feature requests category.

#3

Can expose more ?, e.g.
TrySearchPath()
lastRepath