- The "evaulator" for query.update()/delete() won't work with multi-table
updates, and needs to be set to `synchronize_session=False` or
`synchronize_session='fetch'`; this now raises an exception, with a
message to change the synchronize setting.  This will be only a warning
in 0.9.7.  fixes #3117
Merge branch 'master' into rel_1_0