[tei-council] listRelation membership in model.biblLike

[Lou Burnard]

Looking at an unrelated  ticket, I have just noticed that <listRelation> 
(along with the deprecated <relationGrp> which it replaces) is a member 
of model.biblLike.
Can someone please remind me why? It's not remotely bibliographic, and 
it will look very odd in most places where other members of the class 
appear e.g. inside a <listBibl>