[hibernate-dev] Copyright year in license header

Hi all, what is our guideline with respect to specifying the year of copyright in source code license headers? Is it only the year of the last update or an interval such as "2009 - 2012"? I know that the matter was discussed before, but based on the mails I've found, I'm not sure what the final decision was. I'd like to add this information to the "Contributing to HV" wiki page. Thanks, --Gunnar [1] https://community.jboss.org/wiki/ContributingToHibernateValidator#Coding_...