CamelObject: Implement the notify() method.
CamelObject: Implement the notify() method.

Just a placeholder so subclasses can safely chain up, since GObjectClass
does not implement its own notify() method.

matzipan/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,matzipan/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,tintou/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server