specify a minimum version of autobox::Core
specify a minimum version of autobox::Core

Hopefully will resolve fails like:

    http://www.cpantesters.org/cpan/report/0e40c6cc-50f8-11e2-906e-db2935eb1556

RsrchBoy/Dist-Zilla-Role-EnsureStash,RsrchBoy/Dist-Zilla-Role-EnsureStash