Fixed segfaults and incorrect results in GroupBy.quantile with NA Values in Grouping
- [X] closes #28882
- [X] tests added / passed
- [X] passes `black pandas`
- [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [X] whatsnew entry

All green on this. FWIW I think worth a 0.25.3 release since its a regression and happy to volunteer for that if others agree lgtm cc @jreback > All green on this. FWIW I think worth a 0.25.3 release since its a regression and happy to volunteer for that if others agree

@jorisvandenbossche @TomAugspurger 

ok by me Doesn't matter to me. How far are we from 1.0? ~1 month?

Just FYI Will, there are some strange issues with the pdf build in the
docker container. I had to build it outside of docker. I can probably help
out with that if needed.

On Wed, Oct 30, 2019 at 7:11 AM Jeff Reback <notifications@github.com>
wrote:

> All green on this. FWIW I think worth a 0.25.3 release since its a
> regression and happy to volunteer for that if others agree
>
> @jorisvandenbossche <https://github.com/jorisvandenbossche> @TomAugspurger
> <https://github.com/TomAugspurger>
>
> ok by me
>
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 Sounds good. I'll do the back port and start on the release today / tomorrow. I'll reach out as questions come up