DOC: Add skeleton for 1.0.3 release notes.

Post 1.0.2 cleanup.

docs/source/whatsnew/1.0.2.txt

@@ -2,7 +2,7 @@ Release 1.0.2
 -------------
 
 :Release: 1.0.2
-:Date: TBD
+:Date: September 8, 2016
 
 Enhancements
 ~~~~~~~~~~~~

docs/source/whatsnew/1.0.3.txt

@@ -0,0 +1,59 @@
+Development
+-----------
+
+:Release: 1.0.3
+:Date: TBD
+
+.. warning::
+   This release is still under active development.  All changes listed are
+   subject to change at any time.
+
+
+Highlights
+~~~~~~~~~~
+
+None
+
+Enhancements
+~~~~~~~~~~~~
+
+None
+
+Experimental Features
+~~~~~~~~~~~~~~~~~~~~~
+
+.. warning::
+
+   Experimental features are subject to change.
+
+None
+
+Bug Fixes
+~~~~~~~~~
+
+None
+
+Performance
+~~~~~~~~~~~
+
+None
+
+Maintenance and Refactorings
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+None
+
+Build
+~~~~~
+
+None
+
+Documentation
+~~~~~~~~~~~~~
+
+None
+
+Miscellaneous
+~~~~~~~~~~~~~
+
+None