The well-documented influx of hipsters and young professionals alike in Hudson has no end in sight. The cool kids escape congested city streets in search of a little more space and air. But they’re not settling. Ask any of the pretty young things who now call Hudson home: the red-hot epicenter of upstate art galleries, seen-and-be-seen restaurants, and, yes, where you can sport your finest threads. Truth is, Hudson’s never been cooler. Longtime residents, on the other hand, will tell you that their tony riverside village has always been cool. This, after all, is the place where artists, writers and…