DOC: whatsnew edits

Author: jreback

doc/source/whatsnew/v0.17.1.txt

@@ -82,13 +82,10 @@ Performance Improvements
 
 - Checking monotonic-ness before sorting on an index (:issue:`11080`)
 - ``Series.dropna`` performance improvement when its dtype can't contain ``NaN`` (:issue:`11159`)
-
-
 - Release the GIL on most datetime field operations (e.g. ``DatetimeIndex.year``, ``Series.dt.year``), normalization, and conversion to and from ``Period``, ``DatetimeIndex.to_period`` and ``PeriodIndex.to_timestamp`` (:issue:`11263`)
 - Release the GIL on some rolling algos (``rolling_median``, ``rolling_mean``, ``rolling_max``, ``rolling_min``, ``rolling_var``, ``rolling_kurt``, ``rolling_skew`` (:issue:`11450`)
 - Release the GIL when reading and parsing text files in ``read_csv``, ``read_table`` (:issue:`11272`)
 - Improved performance of ``rolling_median`` (:issue:`11450`)
-
 - Improved performance to ``to_excel`` (:issue:`11352`)
 - Performance bug in repr of ``Categorical`` categories, which was rendering the strings before chopping them for display (:issue:`11305`)
 - Improved performance of ``Series`` constructor with no data and ``DatetimeIndex`` (:issue:`11433`)
@@ -104,66 +101,32 @@ Bug Fixes
 - Bug in ``HDFStore.append`` with strings whose encoded length exceded the max unencoded length (:issue:`11234`)
 - Bug in merging ``datetime64[ns, tz]`` dtypes (:issue:`11405`)
 - Bug in ``HDFStore.select`` when comparing with a numpy scalar in a where clause (:issue:`11283`)
-
 - Bug in using ``DataFrame.ix`` with a multi-index indexer(:issue:`11372`)
 - Prevent adding new attributes to the accessors ``.str``, ``.dt`` and ``.cat``. Retrieving such
   a value was not possible, so error out on setting it. (:issue:`10673`)
-
-
 - Bug in tz-conversions with an ambiguous time and ``.dt`` accessors (:issue:`11295`)
 - Bug in comparisons of Series vs list-likes (:issue:`11339`)
-
-
 - Bug in ``DataFrame.replace`` with a ``datetime64[ns, tz]`` and a non-compat to_replace (:issue:`11326`, :issue:`11153`)
-
 - Bug in list-like indexing with a mixed-integer Index (:issue:`11320`)
-
 - Bug in ``pivot_table`` with ``margins=True`` when indexes are of ``Categorical`` dtype (:issue:`10993`)
 - Bug in ``DataFrame.plot`` cannot use hex strings colors (:issue:`10299`)
-
 - Bug in ``DataFrame.drop_duplicates`` was a regression from 0.16.2, causing incorrect results on integer values (:issue:`11376`)
-
-
 - Bug in ``pd.eval`` where unary ops in a list error (:issue:`11235`)
 - Bug in ``squeeze()`` with zero length arrays (:issue:`11230`, :issue:`8999`)
-
 - Bug in ``describe()`` dropping column names for hierarchical indexes (:issue:`11517`)
-
-
-
 - Bug in ``DataFrame.pct_change()`` not propagating ``axis`` keyword on ``.fillna`` method (:issue:`11150`)
-
-
-
 - Fix regression in setting of ``xticks`` in ``plot`` (:issue:`11529`).
 - Bug in ``holiday.dates`` where observance rules could not be applied to holiday and doc enhancement (:issue:`11477`, :issue:`11533`)
-
-
-
-- Fix plotting issues when having plain ``Axes`` instances instead of
-  ``SubplotAxes`` (:issue:`11520`, :issue:`11556`).
-
-
-
+- Fix plotting issues when having plain ``Axes`` instances instead of ``SubplotAxes`` (:issue:`11520`, :issue:`11556`).
 - Bug in ``DataFrame.to_latex()`` produces an extra rule when ``header=False`` (:issue:`7124`)
 - Bug in ``df.groupby(...).apply(func)`` when a func returns a ``Series`` containing a new datetimelike column (:issue:`11324`)
-
-
 - Bug in ``pandas.json`` when file to load is big (:issue:`11344`)
 - Bugs in ``to_excel`` with duplicate columns (:issue:`11007`, :issue:`10982`, :issue:`10970`)
-
-- Fixed a bug that prevented the construction of an empty series of dtype
-  ``datetime64[ns, tz]`` (:issue:`11245`).
-
+- Fixed a bug that prevented the construction of an empty series of dtype ``datetime64[ns, tz]`` (:issue:`11245`).
 - Bug in ``read_excel`` with multi-index containing integers (:issue:`11317`)
-
 - Bug in ``to_excel`` with openpyxl 2.2+ and merging (:issue:`11408`)
-
 - Bug in ``DataFrame.to_dict()`` produces a ``np.datetime64`` object instead of ``Timestamp`` when only datetime is present in data (:issue:`11327`)
-
-
 - Bug in ``DataFrame.corr()`` raises exception when computes Kendall correlation for DataFrames with boolean and not boolean columns (:issue:`11560`)
-
 - Bug in the link-time error caused by C ``inline`` functions on FreeBSD 10+ (with ``clang``) (:issue:`10510`)
 - Bug in ``DataFrame.to_csv`` in passing through arguments for formatting ``MultiIndexes``, including ``date_format`` (:issue:`7791`)
 - Bug in ``DataFrame.join()`` with ``how='right'`` producing a ``TypeError`` (:issue:`11519`)