Added get_config and send_tick which are mentioned [here](https://i3wm.org/docs/ipc.html).
Gets the version of i3. The reply will be a JSON-encoded dictionary with the
major, minor, patch and human-readable version.
+get_config::
+Gets the currently loaded i3 configuration.
+
+send_tick::
+Sends a tick to all IPC connections which subscribe to tick events.
+
== DESCRIPTION
i3-msg is a sample implementation for a client using the unix socket IPC