Added WhatsNew 0.20.3 noting fix for #16583

Author: frexvahi

doc/source/whatsnew.rst

@@ -20,6 +20,8 @@ These are new features and improvements of note in each release.
 
 .. include:: whatsnew/v0.21.0.txt
 
+.. include:: whatsnew/v0.20.3.txt
+
 .. include:: whatsnew/v0.20.2.txt
 
 .. include:: whatsnew/v0.20.0.txt

doc/source/whatsnew/v0.20.3.txt

@@ -0,0 +1,58 @@
+.. _whatsnew_0203:
+
+v0.20.2 (??, 2017)
+----------------------
+
+This is a minor bug-fix release in the 0.20.x series and includes some small regression fixes,
+bug fixes and performance improvements.
+We recommend that all users upgrade to this version.
+
+.. contents:: What's new in v0.20.3
+    :local:
+    :backlinks: none
+
+
+.. _whatsnew_0203.enhancements:
+
+Enhancements
+~~~~~~~~~~~~
+
+Performance Improvements
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. _whatsnew_0203.bug_fixes:
+
+Bug Fixes
+~~~~~~~~~
+
+Conversion
+^^^^^^^^^^
+
+Indexing
+^^^^^^^^
+
+I/O
+^^^
+
+- Bug where ``pd.read_hdf()`` fails to read a ``Series`` when an explicit ``mode='r'`` argument is supplied (:issue:`16583`)
+
+Plotting
+^^^^^^^^
+
+Groupby/Resample/Rolling
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+Sparse
+^^^^^^
+
+Reshaping
+^^^^^^^^^
+
+Numeric
+^^^^^^^
+
+Categorical
+^^^^^^^^^^^
+
+Other
+^^^^^