Tags give the ability to mark specific points in history as being important
ruby-mail Debian release 2.8.1+dfsg1-1~bpo12+1
Debian release debian/2.7.1+dfsg1-1
Upstream version 2.6.4+dfsg1
Upstream version 2.6.3+dfsg1
Tagging debian version 2.6.1+dfsg1-2.
Upstream version 2.6.1+dfsg1
ruby-mail Debian release 2.5.4-2