Importing import() from Exporter requires Exporter 5.57+

Hi Jeff,

You were doing the following in a few modules:

    use Exporter 'import';

Support for this was added in Exporter 5.57, and since Perl::Critic supports 5.6.x, it's safest to specify the min version of Perl.

I noticed some tests fail, but I'm assuming they were already failing in the version I grabbed from github :-)

Cheers,
Neil