The Hollywood Reporter announced additions to the cast list of “Labor Day,” the Kate Winslet-Josh Brolin movie that has been filming in Shelburne. New cast members include young Lucas Hedges, who appears in Wes Anderson’s new “Moonrise Kingdom,” filmed in Rhode Island, and Alexie Gilmore, who was in the recent movie “Fairhaven,” which was filmed around New Bedford last year. Jason Reitman’s “Labor Day” is based on a novel by Joyce Maynard. It follows a mother and son who cross paths with a convict.