(CNN) — Hillary Clinton casts Bernie Sanders as an unrealistic over-promiser in her new book, according to excerpts posted by a group of Clinton supporters. She said that his attacks against her during the primary caused "lasting damage" and paved the way for "(Donald) Trump's 'Crooked Hillary' campaign." Clinton, in a book that will be released September 12 entitled "What Happened," said Sanders "had to resort to innuendo and impugning my character" because the two Democrats "agreed on so much." The excerpts represent a small number of the roughly 500-page book in which Clinton reflects on her stunning loss to...