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Dec 10, 2017
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DOC: clean-up whatsnew file for 0.21.1 #18690

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DOC: clean-up whatsnew file for 0.21.1
jorisvandenbossche Dec 8, 2017
6eb229d
fix version number
jorisvandenbossche Dec 9, 2017
6c43a39
Merge remote-tracking branch 'upstream/master' into doc-whatsnew-0211
jorisvandenbossche Dec 10, 2017
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66 changes: 24 additions & 42 deletions doc/source/whatsnew/v0.21.1.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,23 @@
v0.21.1
-------

This is a minor release from 0.21.1 and includes a number of deprecations, new
features, enhancements, and performance improvements along with a large number
of bug fixes. We recommend that all users upgrade to this version.
This is a minor bug-fix release in the 0.21.x series and includes some small regression fixes,
bug fixes and performance improvements.
We recommend that all users upgrade to this version.

Highlights include:

- Temporarily restore matplotlib datetime plotting functionality. This should
resolve issues for users who relied implicitly on pandas to plot datetimes
with matplotlib. See :ref:`here <whatsnew_0211.special>`.
- Improvements to the Parquet IO functions introduced in 0.21.0. See
:ref:`here <whatsnew_0211.enhancements.parquet>`.


.. contents:: What's new in v0.21.1
:local:
:backlinks: none


.. _whatsnew_0211.special:

Expand Down Expand Up @@ -42,9 +56,13 @@ registering them when they want them.
New features
~~~~~~~~~~~~

-
-
-
.. _whatsnew_0211.enhancements.parquet:

Improvements to the Parquet IO functionality
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

- :func:`read_parquet` now allows to specify the columns to read from a parquet file (:issue:`18154`)
- :func:`read_parquet` now allows to specify kwargs which are passed to the respective engine (:issue:`18216`)

.. _whatsnew_0211.enhancements.other:

Expand All @@ -53,7 +71,6 @@ Other Enhancements

- :meth:`Timestamp.timestamp` is now available in Python 2.7. (:issue:`17329`)
- :class:`Grouper` and :class:`TimeGrouper` now have a friendly repr output (:issue:`18203`).
-

.. _whatsnew_0211.deprecations:

Expand All @@ -69,17 +86,6 @@ Performance Improvements
~~~~~~~~~~~~~~~~~~~~~~~~

- Improved performance of plotting large series/dataframes (:issue:`18236`).
-
-

.. _whatsnew_0211.docs:

Documentation Changes
~~~~~~~~~~~~~~~~~~~~~

-
-
-

.. _whatsnew_0211.bug_fixes:

Expand All @@ -97,7 +103,6 @@ Conversion
- Bug in :func:`DataFrame.to_dict` where columns of datetime that are tz-aware were not converted to required arrays when used with ``orient='records'``, raising``TypeError` (:issue:`18372`)
- Bug in :class:`DateTimeIndex` and :meth:`date_range` where mismatching tz-aware ``start`` and ``end`` timezones would not raise an err if ``end.tzinfo`` is None (:issue:`18431`)
- Bug in :meth:`Series.fillna` which raised when passed a long integer on Python 2 (:issue:`18159`).
-

Indexing
^^^^^^^^
Expand All @@ -107,7 +112,6 @@ Indexing
- Bug in :class:`IntervalIndex` constructor when a list of intervals is passed with non-default ``closed`` (:issue:`18334`)
- Bug in ``Index.putmask`` when an invalid mask passed (:issue:`18368`)
- Bug in masked assignment of a ``timedelta64[ns]`` dtype ``Series``, incorrectly coerced to float (:issue:`18493`)
-

I/O
^^^
Expand All @@ -117,8 +121,6 @@ I/O
- Bug in :func:`read_csv` for handling null values in index columns when specifying ``na_filter=False`` (:issue:`5239`)
- Bug in :func:`read_csv` when reading numeric category fields with high cardinality (:issue:`18186`)
- Bug in :meth:`DataFrame.to_csv` when the table had ``MultiIndex`` columns, and a list of strings was passed in for ``header`` (:issue:`5539`)
- :func:`read_parquet` now allows to specify the columns to read from a parquet file (:issue:`18154`)
- :func:`read_parquet` now allows to specify kwargs which are passed to the respective engine (:issue:`18216`)
- Bug in parsing integer datetime-like columns with specified format in ``read_sql`` (:issue:`17855`).
- Bug in :meth:`DataFrame.to_msgpack` when serializing data of the numpy.bool_ datatype (:issue:`18390`)
- Bug in :func:`read_json` not decoding when reading line deliminted JSON from S3 (:issue:`17200`)
Expand All @@ -129,8 +131,6 @@ Plotting
^^^^^^^^

- Bug in ``DataFrame.plot()`` and ``Series.plot()`` with :class:`DatetimeIndex` where a figure generated by them is not pickleable in Python 3 (:issue:`18439`)
-
-

Groupby/Resample/Rolling
^^^^^^^^^^^^^^^^^^^^^^^^
Expand All @@ -139,15 +139,6 @@ Groupby/Resample/Rolling
- Bug in ``DataFrame.resample(...)`` when there is a time change (DST) and resampling frequecy is 12h or higher (:issue:`15549`)
- Bug in ``pd.DataFrameGroupBy.count()`` when counting over a datetimelike column (:issue:`13393`)
- Bug in ``rolling.var`` where calculation is inaccurate with a zero-valued array (:issue:`18430`)
-
-

Sparse
^^^^^^

-
-
-

Reshaping
^^^^^^^^^
Expand All @@ -161,9 +152,6 @@ Numeric
^^^^^^^

- Bug in ``pd.Series.rolling.skew()`` and ``rolling.kurt()`` with all equal values has floating issue (:issue:`18044`)
-
-
-

Categorical
^^^^^^^^^^^
Expand All @@ -178,9 +166,3 @@ String
^^^^^^

- :meth:`Series.str.split()` will now propogate ``NaN`` values across all expanded columns instead of ``None`` (:issue:`18450`)

Other
^^^^^

-
-