Small tweak for testing deployment to GitHub Pages in developer forks:
$ git grep -A 3 -B 1 "DEVELOPER FORK" _config.yml- _config.yml:# DEVELOPER FORK (GH user "bob") for testing changes: _config.yml-# baseurl: "/cylc.github.io" _config.yml-# url: "https://bob.github.io/cylc.github.io" _config.yml-