“Neruda” is not a conventional biopic. Hardly surprising given that it’s directed by Pablo Larraín, who is anything but a conventional filmmaker. Instead of a straight forward “here’s what happened” approach, “Neruda” is full of a cinematic playfulness that most notably includes a central plotline about the famed poet being hunted, Inspector Javert-style, by a relentless cop (Gael García Bernal). A cop that never existed. It’s not the only unconventional touch in “Neruda,” a film delightfully more concerned with capturing the emotional truth of the poet, not the exact details of his life.