Arts news highlights: “Puccini and His World” at Bard SummerScape; “David Shrobe” and “The Crown” at Sugar Hill Children’s Museum of Art & Storytelling; “Stuart Davis: In Full Swing” and “Danny Lyon: Message to the Future” at Whitney Museum of American Art; “Merchant of Venice” and National Ballet of Canada’s “The Winter’s Tale” at Lincoln Center Festival 2016.