adds methods to compute the elimination order of variables in VariableElimination
adds methods to compute the elimination order of variables in VariableElimination

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