You need only read the most potted of biographies to know that Luis Miranda is an accomplished man: a plucky, never-say-die Puerto Rican immigrant who arrived in New York as a teen and rose to become a major political consultant, acting as a special advisor to New York mayor Ed Koch, steering campaigns for the likes of Hillary Clinton and Chuck Schumer, founding the Hispanic Federation and strategic consulting firm the MirRam Group, as well as heading up multiple charity initiatives to raise funds for his disaster-struck homeland. A devoted, misty-eyed documentary portrait of the 66-year-old, “Siempre, Luis” covers all this in brief, but is also aware that most regard its subject’s most notable accomplishment as a less direct one: namely, fathering a certain actor-composer-playwright named Lin-Manuel, and thus ensuring that outsize Broadway phenomenon “Hamilton” would eventually enter the world.