A Class for Brant test for OrderedModel (using Python)

Is your feature request related to a problem? Please describe

Absence of brant test for PRA in ordered models

Solution

I have written a class that works for OrderedModels.from_formula by getting inspiration from the brant test in R

I am wondering whether it might be useful as an addendum to OrderedModels in statstmodels.

I lack any experience with submitting patches to existing packages such as statsmodels.