BUG: groupby with sort=False creates buggy MultiIndex #32291

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MarcoGorelli wants to merge 7 commits intopandas-dev:masterfrom

MarcoGorelli:issue-32259

Commits on Feb 27, 2020

fix _lexsort_depth if index levels are not monotonic
Marco Gorelli
committed
whatsnew
Marco Gorelli
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simplify
Marco Gorelli
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revert temp change
Marco Gorelli
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temp
Marco Gorelli
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make the change in the grouper
Marco Gorelli
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change codes rather than levels
Marco Gorelli
committed