Thumbs Up: Exciting new businesses and attractions are popping up all over the Alexandria area. Here are some highlights and updated activities: A new distillery, Little Round Still, opened in The Rune building at Third Avenue and Broadway on May 19, specializing in rum, vodka and bourbon. The Aagard Splash Pad and Viking Bank Playground in Dean Melton Fillmore Park had their ribbon-cutting on May 21. The project has been in the planning stages …