On their first album in 22 years, these Boston heroes show the passage of time has had no diluting effects on their off-kilter indie rock and offbeat humor. With the gleaming power pop of “Robert Pollard,” they not only salute the Guided by Voices leader who carried the torch for ramshackle rock in Big Dipper’s absence, they throw shade at Paul McCartney in the process. And amid the tightly wound jangle of “New Machine,” they cheekily contemplate a world that’s become obsessed with technology.