Xandikos

* Various build cleanups/fixes. (Jelmer Vernooij)

* Add multi-arch docker builds. (Maya)

* do not listen on default address if systemd sockets (schnusch)

* Use correct port in kubernetes to not conflict with the metrics port (Marcel, 286)

* Add support for systemd socket activation.
(schnusch, 136, 155)

* Add basic documentation.
(Jelmer Vernooij)

* Use entry points to install xandikos script.
(Jelmer Vernooij, 163)

* ``sync-collection``: handle invalid tokens.
(Jelmer Vernooij)

* Add basic XMP property support. (Jelmer Vernooij)

* Add a /health target. (Jelmer Vernooij)

* Don't listen on TCP port (defautlting to 0.0.0.0) when a UNIX domain socket
is specified. (schnusch, 134)

* Fix support for uwsgi when environ['wsgi.input'].read() does not
accept a size=None. (Jelmer Vernooij)