statsmodels/statsmodels — pull request #1870 by josef-pkt (2014-08-04 21:07:19+00:00)
Title: robust covariance, cov_type in fit

integrating robust covariances into the model fit method, see issue #1418
summary issue for robust covariances is #1158

continuing after PR #1867
now starting with discrete models to build the generic version