Slight rework of origin regress.  Results now contain llf_el.
Minor documentation fix
Added tests to ElOriginRegress
For some reason the actual tests didn't get commited.
RLS: Tool for getting github stats for release from IPython
STY: PEP-8 and update for statsmodels
Merge pull request #791 from jseabold/github-stats

RLS: Add github stats script for release notes
STY: Fix comment indentation
STY: Indent code comments
TST: Failing tests for pandas in/out in filters.
ENH: Handle pandas in/out in filters. Closes #793.
STY: rename K -> trim. Explicit return None.
Merge pull request #794 from jseabold/filters-pandas

ENH: Allow pandas-in/pandas-out in tsa.filters
Merge pull request #787 from j-grana6/origintests

TST: Add tests for Empirical Likelihood Origin Regression
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