The summer movie season goes into high-gear in July, with the arrival of the seventh “Mission: Impossible” movie followed by the “Oppenheimer” and “Barbie” showdown on July 21. Not that you have to choose one or the other — as Tom Cruise said on Twitter, “I love a double feature, and it doesn't get more explosive (or more pink) than the one with Oppenheimer and Barbie.” August also promises a new take on the Teenage Mutant Ninja Turtles and introduces a new DC superhero, Blue Beetle. Get Boston local news, weather forecasts, lifestyle and entertainment stories to your inbox. Sign...