This week on The Reading Life: Patricia Austin Becker, author of “Cane River Bohemia: Cammie Henry and Her Circle at Melrose Plantation.” And Randy Fertel previews the upcoming conference, “ Improvisation: New Orleans Gift to the Modern World .” Here’s what’s on tap in the literary life this week: Barbara Trevigne will discuss “The Creoles of Color” at 7 p.m., Monday, Nov. 19, at the East Bank Regional Library, 4747 W. Napoleon, Metairie. This event is part of the regularly scheduled meeting of