Modules

new enough "constant" module for multiple constants
new enough Gtk2 version for its constants
explicit perl version for features used
check Perl version declared against POD features used
require __END__ before POD at end of file
check placeholder names in Locale::TextDomain calls
check for Locale::TextDomain imported but unused
avoid quoted version number string in a "use" statement
disallow empty statements (stray semicolons)
some add-on perlcritic policies
Perl version for POD directives used

Provides

in lib/Perl/Critic/Policy/Compatibility/PerlMinimumVersionAndWhy.pm
in lib/Pod/MinimumVersion.pm
in lib/Pod/MinimumVersion.pm