Backport PR #42135 on branch 1.3.x (BUG: use hash-function which takes nans correctly into account for ExtensionDtype)#42183

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simonjayhawkins merged 1 commit intopandas-dev:1.3.xfrom

meeseeksmachine:auto-backport-of-pr-42135-on-1.3.x

Jun 22, 2021

Commits on Jun 22, 2021

Backport PR #42135: BUG: use hash-function which takes nans correctly into account for ExtensionDtype

realead
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meeseeksmachine
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