BUG/ENH: raise notimplemented in zero inflated derivatives (not exp mean)
BUG/ENH: raise notimplemented in zero inflated derivatives (not exp mean)

josef-pkt/statsmodels,bashtage/statsmodels,statsmodels/statsmodels,bashtage/statsmodels,statsmodels/statsmodels,josef-pkt/statsmodels,bashtage/statsmodels,statsmodels/statsmodels,josef-pkt/statsmodels,bashtage/statsmodels,josef-pkt/statsmodels,statsmodels/statsmodels,josef-pkt/statsmodels,bashtage/statsmodels,bashtage/statsmodels,josef-pkt/statsmodels,statsmodels/statsmodels,statsmodels/statsmodels