v0.17.0.txt

.. _whatsnew_0170:

v0.17.0 (July ??, 2015)
-----------------------

This is a major release from 0.16.1 and includes a small number of API changes, several new features,
enhancements, and performance improvements along with a large number of bug fixes. We recommend that all
users upgrade to this version.

Highlights include:


Check the :ref:`API Changes <whatsnew_0170.api>` and :ref:`deprecations <whatsnew_0170.deprecations>` before updating.

.. contents:: What's new in v0.17.0
    :local:
    :backlinks: none

.. _whatsnew_0170.enhancements:

New features
~~~~~~~~~~~~

.. _whatsnew_0170.enhancements.other:

Other enhancements
^^^^^^^^^^^^^^^^^^

.. _whatsnew_0170.api:

Backwards incompatible API changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. _whatsnew_0170.api_breaking:

.. _whatsnew_0170.api_breaking.other:

Other API Changes
^^^^^^^^^^^^^^^^^

.. _whatsnew_0170.deprecations:

Deprecations
^^^^^^^^^^^^

.. _whatsnew_0170.prior_deprecations:

Removal of prior version deprecations/changes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.. _whatsnew_0170.performance:

Performance Improvements
~~~~~~~~~~~~~~~~~~~~~~~~

- Improved ``Series.resample`` performance with dtype=datetime64[ns] (:issue:`7754`)

.. _whatsnew_0170.bug_fixes:

Bug Fixes
~~~~~~~~~

- Bug where read_hdf store.select modifies the passed columns list when
  multi-indexed (:issue:`7212`)
- Bug in ``Categorical`` repr with ``display.width`` of ``None`` in Python 3 (:issue:`10087`)


- Bug where Panel.from_dict does not set dtype when specified (:issue:`10058`)
- Bug in ``Timestamp``'s' ``microsecond``, ``quarter``, ``dayofyear``, ``week`` and ``daysinmonth`` properties return ``np.int`` type, not built-in ``int``. (:issue:`10050`)
- Bug in ``NaT`` raises ``AttributeError`` when accessing to ``daysinmonth``, ``dayofweek`` properties. (:issue:`10096`)


- Bug in getting timezone data with ``dateutil`` on various platforms ( :issue:`9059`, :issue:`8639`, :issue:`9663`, :issue:`10121`)
- Bug in display datetimes with mixed frequencies uniformly; display 'ms' datetimes to the proper precision. (:issue:`10170`)

- Bung in ``Series`` arithmetic methods may incorrectly hold names (:issue:`10068`)

- Bug in ``DatetimeIndex`` and ``TimedeltaIndex`` names are lost after timedelta arithmetics ( :issue:`9926`)


- Bug in `Series.plot(label="LABEL")` not correctly setting the label (:issue:`10119`)

- Bug in `plot` not defaulting to matplotlib `axes.grid` setting (:issue:`9792`)

- Bug in ``Series.align`` resets ``name`` when ``fill_value`` is specified (:issue:`10067`)



- Bug in GroupBy.get_group raises ValueError when group key contains NaT (:issue:`6992`)