Check out how to pack, and what to wear each day and night, for a Memorial Day weekend style master class from Team SG. It’s a satisfying feeling: The first time you put away your big dumb heavy layers for good, and welcome the warm months ahead. Goodbye, pulling on a pea coat over your sweater over a button-down over a henley. Hello-o-o-o, packing a light bag for long weekends in the sun. The official kickoff to warm weather style…