Run locally with: go run .
The different versions of Aaallt, with different links, are loaded dynamically depending on the subdomain and loads the corresponding YAML file with the same name in links/. When testing you can access each link tree at <file-name>.localhost:3000 or simply localhost:3000 for default Aaallt.
links/systems.yml are the default links loaded for every subdomain.
To create a new version/link tree, just create a new YAML file in links/ with the same format and point a subdomain to this system.