- The format of the configuration file has changed since version 0.11.0.

See /usr/local/share/examples/headscale for examples of the new format.

- Namespace keyword has been replaced by User in version 0.19.0.

Command line flags previously taking --namespace or -n will now require
--user or -u

- The structure of database configuration has changed in version 0.23.0.

Old structure has been removed and the configuration must be converted. See
/usr/local/share/examples/headscale/config-example.yaml for the new structure.
