mark 1.6-branch as outdated

Michael Merickel

2016-05-20 b46a7f74063acdc8de9540f37895f3c05fb17816

mark 1.6-branch as outdated

 docs/conf.py

@@ -149,7 +149,7 @@
    # on master branch true, else false
    in_progress='false',
    # on previous branches/major releases true, else false
    outdated='false',
    outdated='true',
    )

# The name for this set of Sphinx documents.  If None, it defaults to