These are the changes in pandas 1.4.2. See :ref:`release` for a full changelog including other versions of pandas.
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- Fixed regression in :meth:`DataFrame.drop` and :meth:`Series.drop` when :class:`Index` had extension dtype and duplicates (:issue:`45820`)
- Bug in :meth:`Groupby.rolling` with a frequency window would raise a
ValueErroreven if the datetimes within each group were monotonic (:issue:`46061`)
.. contributors:: v1.4.1..v1.4.2|HEAD