[fixes #201] adds tests for TreeCPD
[fixes #201] adds tests for TreeCPD

anaviltripathi/pgmpy,vivek425ster/pgmpy,ankurankan/pgmpy,khalibartan/pgmpy,kris-singh/pgmpy,yashu-seth/pgmpy,abinashpanda/pgmpy,sandeepkrjha/pgmpy,khalibartan/pgmpy,kislayabhi/pgmpy,liquidmetal/pgmpy,kislayabhi/pgmpy,jhonatanoliveira/pgmpy,kris-singh/pgmpy,ankurankan/pgmpy,yashu-seth/pgmpy,pratyakshs/pgmpy,palashahuja/pgmpy,vivek425ster/pgmpy,abinashpanda/pgmpy,liquidmetal/pgmpy,pgmpy/pgmpy,pgmpy/pgmpy,anaviltripathi/pgmpy,sandeepkrjha/pgmpy,jhonatanoliveira/pgmpy,pratyakshs/pgmpy,palashahuja/pgmpy