CHANGES WITH 224:
+ * The systemd-efi-boot-generator functionality was merged into
+ systemd-gpt-auto-generator.
+
+ * systemd-networkd now supports Group Policy for vxlan devices. It can
+ be enabled via the new boolean configuration option called
+ 'GroupPolicyExtension='.
+
Contributions from: Andreas Kempf, Christian Hesse, Daniel Mack, David
Herrmann, Herman Fries, Johannes Nixdorf, Kay Sievers, Lennart
Poettering, Peter Hutterer, Susant Sahani, Tom Gundersen