Changelog: Move non-sm 1.1.0 to 'initial release'. Now we have a complete history

CHANGELOG

@@ -48,3 +48,8 @@ Current state of upstream Non Session Manager v1.2 including unreleased /nsm/gui
 1.2.0 / 2017-07-08
 Last release of Non-Session-Manager.
 Commit 1904aba516341287ac297cefbbcd185f643e5538 
+
+
+1.1.0 / 2012-03-03
+Initial release of Non-Session-Manager.
+https://non.tuxfamily.org/wiki/2012-03-03%20Release%20Announcement%20v1.1.0