TK is now included by the pluginbundle
switch to using Parse::CPAN::Authors
avoid repeating the filename more than once
for diagnosing bad encodings in other Authors modules via cpantesters, dump all that are installed
derive the plugin type
Acme-CPANAuthors-Nonhuman-0.008

          - new test added to track down encoding errors in other author
            modules, with the help of cpantesters