Planning notebook (#506)
Planning notebook (#506)

* start planning notebook

* reorder cell execution order

* incorporating suggestions

jo-tez/aima-python,aimacode/aima-python,Chipe1/aima-python,SnShine/aima-python,SnShine/aima-python,Chipe1/aima-python,aimacode/aima-python,jo-tez/aima-python