Contributed by Lucas Moran / On Instagram, where most artists list their websites, exhibitions, and accomplishments beneath their handles, Dan Schein keeps it simple: “artist/painter,” followed by “Person Who Stutters.” It’s fitting for a painter whose work, some now on display at JJ Murphy Gallery, feels as though it may sometimes have a tough time coming out of him. But Schein, a painter’s painter, knows how to elicit beauty from struggle….