+--- 1.5.5 2014/06/06
+
+zoom: allow hostname to be given for ipauth MP-552
+The Torus setting for that is called auth_hostname.
+
+--- 1.5.4 2014/06/04
+
+zoom: IP auth use field "ipRanges" rather than "ip" MP-551
+
--- 1.5.3 2014/06/03
session_shared: close in ~BackendInstance MP-549