test module to validate package metadata for CPAN

 Test::CPAN::Meta is a Perl test module for validating that the META.yml or
 META.json file, included in all standard distributions uploaded to CPAN, is
 correct. To work properly, these files must conform to the CPAN Metadata
 Specification (see <URL:https://metacpan.org/release/CPAN-Meta-Spec>)
 .
 This package is considered the successor of Test::CPAN::Meta::YAML and
 Test::CPAN::Meta::JSON.