Zoinks! After more than seven years, Boomerang, the cartoon streaming service from Warner Bros. Discovery, is shutting down as a standalone service. Boomerang will be shut down next month, and its catalog of shows — including “Scooby-Doo,” “Looney Tunes,” “Tom and Jerry,” “The Flintstones,” “Courage the Cowardly Dog” and more — will become part of […]