Py3: make 'Toolbox/phaseplane.py' compatible with Python 3.3
Py3: make 'Toolbox/fracdim.py' compatible with Python 3.3
Py3: make 'Toolbox/event_driven_simulator.py' compatible with Python 3.3
Py3: make 'Toolbox/FSM.py' compatible with Python 3.3
Py3: make 'Toolbox/neuralcomp.py' compatible with Python 3.3
Py3: make 'Toolbox/adjointPRC.py' compatible with Python 3.3