ENH: Working NBin with more loglike choices
ENH: keep full loglik in SM
ENH: removed traces of nbp
ENH: nbin scoreobs
ENH: nbin docstring nb2 vs nb1 vs geom
ENH: reverting change on exog local shortcut in hessian
ENH: NBin -> NegativeBinomial
ENH: nbin pep8
TST: nbin tests
ENH: NegativeBinomial predict
ENH: NBin pickle test
TST: NBin crosscheck R results
ENH: NBin formulas