Atom feeds for Sumo User Mailing List

feeds Topics only
http://sumo-user-mailing-list.90755.n8.nabble.com/Sumo-User-Mailing-List-ft1.xml
feeds Topics and replies
http://sumo-user-mailing-list.90755.n8.nabble.com/Sumo-User-Mailing-List-f1.xml