Zach Braff is such a likable person that we feel we know him. With his new film, “Wish I Was Here,” he plays off that familiarity and offers up a subversively genial story. Braff brings to this a masterful grasp of tone. He is not giving us a typical foray into mainstream comedy. It’s not even a typical foray into independent “cinema.” There’s more heart in this film than you might expect delivered in what one would hope is developing into Mr. Braff’s signature style. You have a common thread running from this new film and 2004’s “Garden State” and that is the universal need to love and be loved, to make sense of the world, and to rise to the occasion.