Update copyright year.

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1616709 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release apache-rat-project-0.11

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1616711 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1616713 13f79535-47bb-0310-9956-ffa450edef68