v0.19.1.txt

.. _whatsnew_0191:

v0.19.1 (????, 2016)
---------------------

This is a minor bug-fix release from 0.19.0 and includes a large number of
bug fixes along with several new features, enhancements, and performance improvements.
We recommend that all users upgrade to this version.

Highlights include:


.. contents:: What's new in v0.19.1
    :local:
    :backlinks: none


.. _whatsnew_0191.performance:

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







.. _whatsnew_0191.bug_fixes:

Bug Fixes
~~~~~~~~~


- Bug in ``pd.DataFrame`` where constructor fails when given dict with ``None`` value (:issue:`14381`)











- Bug in ``pd.concat`` where names of the ``keys`` were not propagated to the resulting ``MultiIndex`` (:issue:`14252`)
- Bug in ``MultiIndex.set_levels`` where illegal level values were still set after raising an error (:issue:`13754`)