After feeling immersed in the 1920s with “The Great Gatsby,” I remembered a book of Hemingway’s written about those same years, in which he spent some time with Fitzgerald. The book is “A Moveable Feast,” a wonderful memoir of his 20s, when he lived mostly on the Left Bank in Paris with his first wife, Hadley Richardson, and their toddler son, called Bumby. The book was published in 1964, three years after Hemingway’s death by…