New releases

★ ★ A Liar’s Autobiography: The Untrue Story of Monty Python’s Graham Chapman And now for something completely different: an animated multi-chapter documentary life story that is narrated by its own subject, Monty Python’s Graham Chapman, who has been inconveniently dead for 23 years, and who’s probably making it all up anyway. For Python completists only. (85 min., R) (Ty Burr)