-TRIAL version should be a proper version, fixes https://github.com/charsbar/www-cpants/issues/16
don't slurp unless it's readable
we have several more special files now: META.json, MYMETA.* dist.ini, cpanfile
these days README.md is not uncommon
-l test should be done against the full path of a file, and it should be done regardless the file is listed in the MANIFEST or not
buildfile_executable should not be true if Makefile.PL/Build.PL does not exist
this kind of static message should be moved to the metric's error description not to bloat databases needlessly
store M::I version for statistics: http://cpants.cpanauthors.org/stats/module_install
don't try to extract dependencies from a module that does not exist actually
files_array may be empty (sometimes)
entries in provides may not be hash references
this file field is required, but may happen to be undef when META.yml is broken
files in xt/ should be ignored when we check prereq matches use
added a core metric for non_portable_filenames: bad filenames that are not allowed or portable
remove debian related metrics: data source has not been updated for more than a year
disabled CPANTS error metrics, which may be useful for us, but should not annoy people
RT #77717: POD errors

https://rt.cpan.org/Ticket/Display.html?id=77717
these errors are not informative, and should be stored in other places
removed uses_test_nowarnings metrics
removed has_test_pod(_coverage) because they are tests for authors only