Tags give the ability to mark specific points in history as being important
Fix for CVE-2013-2230
Fix for CVE-2013-2218
Candidate release 2 of libvirt-1.1.0
Candidate release 1 for libvirt-1.1.0
Release candidate 1 of libvirt-1.0.5
Candidate release 1 of libvirt 1.0.4