The property GravatarId in User and Author models is marked as obsolete

Alright, guys, so I marked the GravatarId of User and Author as 'obsolete' (issue #613). User derives from Account, which has the AvatarUrl property, which should be used instead and the Author has it anyway. As far as I can see, the test data in the deserialization tests already includes the avatar_url, so I guess the tests are fine as well. Is this correct? Did I miss anything?