THOUSAND OAKS — The Kingsmen Shakespeare Festival launched in 1997 with the professional production of “A Midsummer Night’s Dream” and the goal of presenting the magical comedy every decade with a different theme. Now, as the Kingsmen Shakespeare Company celebrates its milestone 30th year, it will again honor the tradition. This summer’s production of “A Midsummer Night’s Dream” is set in the 1920s jazz and gangster world of Chicago and will run June 19 to July 5. “Hamlet” is the second production, July 10 to 26, and will be set in the late 19th century. All performances are at 8 p.m., Friday through Sunday, in Kingsmen Park on the California Lutheran University campus.