Log Message:
0.20.3

Bug Fixes
* Fixed a bug in failing to compute rolling computations of a \ 
column-MultiIndexed DataFrame
* Fixed a pytest marker failing downstream packages’ tests suites

Conversion
* Bug in pickle compat prior to the v0.20.x series, when UTC is a timezone in a \ 
Series/DataFrame/Index
* Bug in Series construction when passing a Series with dtype='category'.
* Bug in DataFrame.astype() when passing a Series as the dtype kwarg..

Indexing
* Bug in Float64Index causing an empty array instead of None to be returned from \ 
.get(np.nan) on a Series whose index did not contain any NaN s
* Bug in MultiIndex.isin causing an error when passing an empty iterable
* Fixed a bug in a slicing DataFrame/Series that have a TimedeltaIndex

I/O
* Bug in read_csv() in which files weren’t opened as binary files by the C \ 
engine on Windows, causing EOF characters mid-field, which would fail
* Bug in read_hdf() in which reading a Series saved to an HDF file in \ 
‘fixed’ format fails when an explicit mode='r' argument is supplied
* Bug in DataFrame.to_latex() where bold_rows was wrongly specified to be True \ 
by default, whereas in reality row labels remained non-bold whatever parameter \ 
provided.
* Fixed an issue with DataFrame.style() where generated element ids were not unique
* Fixed loading a DataFrame with a PeriodIndex, from a format='fixed' HDFStore, \ 
in Python 3, that was written in Python 2

Plotting
* Fixed regression that prevented RGB and RGBA tuples from being used as color \ 
arguments
* Fixed an issue with DataFrame.plot.scatter() that incorrectly raised a \ 
KeyError when categorical data is used for plotting

Reshaping
* PeriodIndex / TimedeltaIndex.join was missing the sort= kwarg
* Bug in joining on a MultiIndex with a category dtype for a level.
* Bug in merge() when merging/joining with multiple categorical columns

Categorical
* Bug in DataFrame.sort_values not respecting the kind parameter with \ 
categorical data