Add release notes for 0.3

doc/releasenotes.rst

@@ -1,6 +1,26 @@
 Release notes
 =============
 
+Version 0.3
+-----------
+
+* Extra files can now be installed into locations other than the installation
+  directory.
+* Shortcuts can have non-Python commands, e.g. to create a start menu shortcut
+  to a help file.
+* The Python API has been cleaned up, and there is some :doc:`documentation
+  <api/index>` for it.
+* Better support for modern versions of Windows:
+
+  * Uninstall shortcuts correctly on Windows Vista and above.
+  * Byte compile Python modules at installation, because the ``.pyc`` files
+    can't be written when the application runs.
+
+* The Python installers are now downloaded over HTTPS instead of using GPG to
+  validate them.
+* Shortcuts now launch the application with the working directory set to the
+  user's home directory, not the application location.
+
 Version 0.2
 -----------