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Mike Bayer
12073e281e
SchemaEventTarget, which supplies dispatch - the dispatch now provides before_parent_attach(), after_parent_attach(), events which generally bound the _set_parent() event. [ticket:2037] - the _on_table_attach mechanism now usually uses the event dispatch - fixed class-level event dispatch to propagate to all subclasses, not just immediate subclasses - fixed class-level event unpickling to handle more involved inheritance hierarchies, needed by the new schema event dispatch. - ForeignKeyConstraint doesn't re-call the column attach event on ForeignKey objects that are already associated with the correct Column - we still need that ImportError on mysqldb CLIENT FLAGS to support mock DBAPIs