+--- 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
+This fixes a serious issue where some MP would leak sockets.
+
+session_shared: mutex lock in BackendClass::release_backend MP-550
+Fixes a SEGV that could occur (in rare cases).
+
--- 1.5.2 2014/05/22
zoom: Do not include ZOOM C's fake surrogate diag recs MP-547