Support sorting partners by relative_size.
Support sorting partners by relative_size.

mzikherman/metaphysics-1,broskoski/metaphysics,mzikherman/metaphysics-1,artsy/metaphysics,craigspaeth/metaphysics,artsy/metaphysics,1aurabrown/metaphysics,craigspaeth/metaphysics,mzikherman/metaphysics-1,artsy/metaphysics,mzikherman/metaphysics-1