Using built-in perl module Archive::Tar

Fresh version of Archive::Tar::Wrapper (0.16) does not have list_files()
method. It has list_all() method. But why we need to use some complex logic,
if we can use perl build-in module?
Fixing test
Fix pristine perlbrews
Update copyright year
Use Author::RHOELZ customization features
Update README
Require Archive::Tar for tests
Merge pull request #1 from bessarabov/fix_test

Fix test
Don't care about trailing slashes for directories
Add Changes contents
v0.02

     - Remove usage of Archive::Tar::Wrapper, which broke tests (Ivan Bessarabov++)
Update README
Add comparison to Git::GatherDir
Add Git::GatherDir to SEE ALSO
Remove useless import Archive::Tar::Wrapper
Move test helpers into TestUtil package
Update README
Test how the plugin handles git repository subdirectories
Fix location of Author::RHOELZ version
Make sure we properly handle git subrepos