- restate the "secondary" / AssociationProxy warning more strongly. references #3638
- restate the "secondary" / AssociationProxy warning more strongly.
references #3638

bdupharm/sqlalchemy,sqlalchemy/sqlalchemy,monetate/sqlalchemy,graingert/sqlalchemy,zzzeek/sqlalchemy,robin900/sqlalchemy,robin900/sqlalchemy,wujuguang/sqlalchemy,graingert/sqlalchemy,bdupharm/sqlalchemy,j5int/sqlalchemy,sandan/sqlalchemy,wujuguang/sqlalchemy,monetate/sqlalchemy,j5int/sqlalchemy,sandan/sqlalchemy