statsmodels/statsmodels — pull request #1234 by bashtage (2013-12-16 11:04:45+00:00)
Title: ENH: Robust skewness, kurtosis and medcouple measures

This addresses #838 by adding medcouple and the Kim & White robust skewness and kurtosis measures.

I'm not sure if I handle ties correctly in medcouple, so probably wait a bit for any merge.