statsmodels/statsmodels — pull request #1204 by vincentarelbundock (2013-11-24 21:53:30+00:00)
Title: GEE rebased

This is a kshedden's GEE commits, rebased on top of current master. My plan is to:

1. Merge this into a GEE branch on the statsmodels repo
2. Make PRs against that branch to faciliate review
3. Once we get feedback, merge that branch into master