https://planet.scheme.org/ is now up on our server with the permission
of Planet Scheme's previous maintainer, Jens Axel Søgaard, who helped us
move it over.

https://blog.scheme.org/ is an alias that redirects to planet.scheme.org.

The previous URL, http://www.scheme.dk/planet/ now redirects to
https://planet.scheme.org/ as does the Atom feed URL.