better diagnostic output on failure
fix failing test

http://www.cpantesters.org/cpan/report/fe011d32-6c16-1014-9e68-f2bec8f412ad
whitespace
minor doc tweaks
new "eval" option, for executing Perl code
remove unneeded test configurations
make tests easier to understand by bringing all their support content into one file
remove dependence on Path::Class APIs