Require Pathname explicitly
Require Pathname explicitly

Not sure why it's not getting required, but seems correct to do
it explicitly rather than relying on possibly-not-working-everywhere
transitive requires.

Closes #112

edusantana/gli,apotterri/gli,edusantana/gli,mauromorales/gli,apotterri/gli,mauromorales/gli,davetron5000/gli,annafw/gli,annafw/gli,davetron5000/gli