BUG: Fix groupby sorting on ordered Categoricals (GH25871)#25908

Merged

jreback merged 12 commits intopandas-dev:masterfrom

kpflugshaupt:master

Apr 5, 2019

Commits on Mar 29, 2019

Fix whatsnew file formatting
kpflugshaupt
committed
Extend unit test with code sample from #25167
kpflugshaupt
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Fix test: expected values
kpflugshaupt
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Fix test: expected values dtype (Windows takes 'int' as 'int32', instead of 'int64'), also PEP 8 fixes
kpflugshaupt
committed

Commits on Mar 30, 2019

Added #25167 to whatsnew file as resolved
kpflugshaupt
committed

Commits on Apr 3, 2019