2015 is shaping up to be the year when I am given the privilege to revisit a number of old literary friends. From Albert Camus’ Meursault in Kamel Daoud’s new “The Meursault Investigation” to Harper Lee’s Scout Finch in “Go Set a Watchman” and now, so I recently discovered, Jacqueline Kelly’s Calpurnia Tate in “The Curious World of Calpurnia Tate.”