DOC: language changes to whatsnew

Author: deniederhut

doc/source/whatsnew/v0.23.0.txt

@@ -181,6 +181,7 @@ Please note that the string `index` is not supported with the round trip format,
 Other Enhancements
 ^^^^^^^^^^^^^^^^^^
 
+- Unary ``+`` now permitted for ``Series`` and ``DataFrame`` as  numeric operator (:issue:`16073`)
 - Better support for :func:`Dataframe.style.to_excel` output with the ``xlsxwriter`` engine. (:issue:`16149`)
 - :func:`pandas.tseries.frequencies.to_offset` now accepts leading '+' signs e.g. '+1h'. (:issue:`18171`)
 - :func:`MultiIndex.unique` now supports the ``level=`` argument, to get unique values from a specific index level (:issue:`17896`)
@@ -273,7 +274,6 @@ Build Changes
 Other API Changes
 ^^^^^^^^^^^^^^^^^
 
-- Unary ``+`` operator now permitted for ``Series`` and ``DataFrame`` (:issue:`16073`)
 - :func:`Series.astype` and :func:`Index.astype` with an incompatible dtype will now raise a ``TypeError`` rather than a ``ValueError`` (:issue:`18231`)
 - ``Series`` construction with an ``object`` dtyped tz-aware datetime and ``dtype=object`` specified, will now return an ``object`` dtyped ``Series``, previously this would infer the datetime dtype (:issue:`18231`)
 - A :class:`Series` of ``dtype=category`` constructed from an empty ``dict`` will now have categories of ``dtype=object`` rather than ``dtype=float64``, consistently with the case in which an empty list is passed (:issue:`18515`)