Britain's Prince Harry's book 'Spare' is seen in a Barcelona bookstore, before its official release date.NACHO DOCE/Reuters Prince Harry is set to release a memoir, Spare, detailing his complicated relationship with King Charles and Prince William, memories of his late mother Princess Diana, and his last conversation with the Queen. The much-awaited memoir was set to be released next Tuesday, but it accidentally went on sale in Spain five days before the official release date, giving readers a premature look at the explosive revelations about the Royal Family. It is released on the heels of Meghan and Harry’s six-part Netflix...