Bang and Clatter's swan song, Lady, will make us miss them even more...by Christine Howey...Beset by financialtroubles and an ill-advised expansion to Cleveland caused by what Alan Greenspan might term "irrational exuberance," the Bang and the Clatter founders Sean McConaha and Sean Derry have been forced to fold their tents in both Cleveland and Akron. But their final production gives a capsule view of what they contributed to the local theater scene. Lady, authored by Craig Wright (Six Feet Under), is just the kind of challenging, edgy play B&C did so well. During their…