[Dbix-class] ANNOUNCE: 0.08121 -- add_to_$rel broken with objects

[Ashley]

Hijacking the announce thread.

add_to_$rel no longer seems to support adding objects. Only hashrefs.  
Was this intentional or a regression bug? It was working in recent  
versions and is still documented to work in the Pod. I haven't dug  
deeply into this but an app of mine broke on this upgrade. Not sure  
what DBIC version it was on before but it wasn't tooooo old.

-Ashley