Post-Code
"This is the most Kubrickian room," Lin-Manuel Miranda said the other night, sweeping into the seventh floor of the New Museum, on the Bowery. The room was long, very white, with two glass walls, facing south and east, and in a corner was a curved white leather couch, to which Miranda led his party. Miranda, the creator and star of "Hamilton" and "In the Heights," asked for coffee"very sweet, very light, por favor. H…