allows ordering of nodes - but not parents to differ
allows ordering of nodes - but not parents to differ

khalibartan/pgmpy,pgmpy/pgmpy,pgmpy/pgmpy,abinashpanda/pgmpy,ankurankan/pgmpy,jhonatanoliveira/pgmpy,sandeepkrjha/pgmpy,kris-singh/pgmpy,khalibartan/pgmpy,kris-singh/pgmpy,abinashpanda/pgmpy,jhonatanoliveira/pgmpy,sandeepkrjha/pgmpy,ankurankan/pgmpy