ENH: add sort_categories argument to union_categoricals#13846

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chris-b1 wants to merge 5 commits intopandas-dev:masterfrom

chris-b1:union_categoricals_ordered

Commits on Jul 29, 2016

ENH: add sort_categories argument to union_categoricals

sinhrks
authored and
chris-b1
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skip r-esort when possible on fastpath
chris-b1
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Commits on Aug 2, 2016