Log Message:
py-statsmodels: updated to 0.9.0

0.9.0:

The Highlights
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statespace refactoring, Markov Switching Kim smoother
3 Google summer of code (GSOC) projects merged - distributed estimation - VECM \ 
and enhancements to VAR (including cointegration test) - new count models: \ 
GeneralizedPoisson, zero inflated models
Bayesian mixed GLM
Gaussian Imputation
new multivariate methods: factor analysis, MANOVA, repeated measures within ANOVA
GLM var_weights in addition to freq_weights
Holt-Winters and Exponential Smoothing