handle unicode strings in package content
[Git::CheckFor::MergeConflicts] cannot handle new encoding stuff
Dist-Zilla-Plugin-CheckSelfDependency-0.004

          - fixes for Dist::Zilla 5.x, where we need to set the binmode on the
            fh before opening to the encoded content (we are still compatible
            with older Dist::Zilla as well)