Mac DeMarco’s second full-length isn’t a departure from its predecessor so much as a richer, increasingly assured refinement. At its best, it’s an outstanding crystallization of his gifts, the real-talk advice of Jonathan Richman with a far more accessible poetic dreaminess. “Ode to Viceroy,” Mac DeMarco’s sun-dappled tribute to cheap cigs from his 2012 album 2, hasn’t lost its smolder. It’s proba