DOC: add whatsnew for v0.20.1

Author: jreback

doc/source/whatsnew/v0.20.1.txt

@@ -0,0 +1,85 @@
+.. _whatsnew_0201:
+
+v0.20.1 (???)
+-------------
+
+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.
+
+Highlights include:
+
+.. contents:: What's new in v0.20.1
+    :local:
+    :backlinks: none
+
+
+.. _whatsnew_0201.enhancements:
+
+Enhancements
+~~~~~~~~~~~~
+
+
+
+.. _whatsnew_0201.performance:
+
+Performance Improvements
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+
+
+.. _whatsnew_0201.bug_fixes:
+
+Bug Fixes
+~~~~~~~~~
+
+Conversion
+^^^^^^^^^^
+
+
+
+
+Indexing
+^^^^^^^^
+
+
+
+
+I/O
+^^^
+
+
+
+
+Plotting
+^^^^^^^^
+
+
+
+
+Groupby/Resample/Rolling
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+
+
+
+Sparse
+^^^^^^
+
+
+
+
+Reshaping
+^^^^^^^^^
+
+
+
+
+Numeric
+^^^^^^^
+
+
+
+
+Other
+^^^^^