zbus_macros-1.2.0

• Provide access to message headers in dbus_interface methods, through an attribute.
• Always deserialize message body as tuple. This fixes build against zbus_polkit crate.
• Don't rely on zvariant crate in the scope.
• Add missing LICENSE file to crate package.
• Other internal/minor fixes/optimizations.

Contributors to this release:

• Jonas Platte
• Marc-André Lureau