Highlights of the Berkshire cultural weekend include another segment of Symphony Space’s Selected Shorts at the Mahaiwe; cellist Andrés Díaz and pianist Wendy Chen performing cello-piano duets at Tannery Pond concerts; the opening of Roberto Juarez: Mural Paintings 2000-2011 at the Berkshire Museum; a weekend-long celebration of music by Nerissa and Katryna Nields in Northampton;…