http://fedoraproject.org/wiki/Licensing lists two versions (1.0 and 2.0)
of the Zope Public License in the "good licenses" list. Both entries in
the table refer to
http://www.zope.org/Resources/ZPL, which has
contained the text of version 2.1 of the license for quite some time.
Can ZPLv2.1 please be added to the good licenses list, as it's needed
for python-zope-interface.
Paul.