Merge branch 'master' of github.com:tswast/pandas

doc/source/whatsnew/v0.24.0.txt

@@ -172,7 +172,7 @@ Other Enhancements
 - :func:`to_gbq` and :func:`read_gbq` signature and documentation updated to
   reflect changes from the `Pandas-GBQ library version 0.6.0
   <https://pandas-gbq.readthedocs.io/en/latest/changelog.html#changelog-0-6-0>`__.
-  (:issue:`21627`)
+  (:issue:`21627`, :issue:`22557`)
 - New method :meth:`HDFStore.walk` will recursively walk the group hierarchy of an HDF5 file (:issue:`10932`)
 - :func:`read_html` copies cell data across ``colspan`` and ``rowspan``, and it treats all-``th`` table rows as headers if ``header`` kwarg is not given and there is no ``thead`` (:issue:`17054`)
 - :meth:`Series.nlargest`, :meth:`Series.nsmallest`, :meth:`DataFrame.nlargest`, and :meth:`DataFrame.nsmallest` now accept the value ``"all"`` for the ``keep`` argument. This keeps all ties for the nth largest/smallest value (:issue:`16818`)