Use my external update-copyright package to maintain copyright blurbs.
http://pypi.python.org/pypi/update-copyright/
--- /dev/null
+[project]
+name: package-cache
+vcs: Git
+
+[files]
+authors: yes
+files: yes
+ignored: AUTHORS | COPYING | README | .update-copyright.conf |
+ .git* | __pycache__
+
+[copyright]
+short: {project} comes with ABSOLUTELY NO WARRANTY and is licensed under the GNU General Public License.
+long: This file is part of {project}.
+
+ {project} is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ {project} is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with {project}. If not, see <http://www.gnu.org/licenses/>.