* removed children reference from addChildren
* added Print action
* fixed variable names an check the conditions in the idle task
* use NOTSTARTED in IIimedNode
* reduce amount to 1 for debugging
* proper frame loop
* fixed the active flag for the prio selector
* made getChildrenState in the Selector class virtual
* skip the frames output and let the example run endless
* reset the state of a Parallel node if it's finished
* updated behaviour tree for testing