Log Message:
math/py-statsmodels: Update to 0.10.2

This is a major release from 0.9.0 and includes a number new
statistical models and many bug fixes.

Highlights include:

* Generalized Additive Models. This major feature is experimental and
  may change.
* Conditional Models such as ConditionalLogit, which are known as
  fixed effect models in Econometrics.
* Dimension Reduction Methods include Sliced Inverse Regression,
  Principal Hessian Directions and Sliced Avg. Variance Estimation
* Regression using Quadratic Inference Functions (QIF)
* Gaussian Process Regression