The Washington Post reported yesterday that D.C. Commission on the Arts and Humanities Executive Director Tony Gittens will be retiring from his position at the end of July. Gittens has been the commission’s director for almost 12 years, and has been active in the District’s art scene since the 1960s. Most recently, he has also been the Director of the D.C. International Film Festival (Filmfest DC), a position he will continue to hold. The Post…