[OSM-dev] https://github.com/openstreetmap is now not only a mirror

[Ævar Arnfjörð Bjarmason]

Paul Hartmann requested permission to use github.com/openstreetmap for
a non-mirrored project, beboj. I thought it was a great idea and the
"openstreetmap" github account was subsequently turned into an
organization by Paul.

It's still mainly a mirroring account, but if anyone else would like
to develop openstreetmap-related code there adding you as a member of
the organization would be most welcome.