Fix for determining Gumroad licenses

Fixes an issue where static tokens were mistaken as Gumroad subscription licenses

Changelog for 0.8.8:

Commits
4209b38 Update notes for usage of inlets PRO tunnels by @alexellis
c877401 Add conceptual image by @alexellis
cb4e3c0 Update version for gumroad tokens by @alexellis

Generated by Derek