remove generated stuff from repo
move author tests from t to xt
make author tests mandator and enhance from other

* make all author tests mandatory to avoid issues on CPAN
  (to easy to ignore skips)
* enhance author tests from other recent updated modules
bump version to 0.06
fix POD typo
note the few Changes made
update manifest.skip to recent environment(s)
adjust Build.PL for new environment (github, xt/)