Memorial Day heralds the beginning of summer, especially in these parts where, for decades, part time residents have come to get out of the city from June until September. For those who live in part time and vacation-residences, this is a weekend for Yard Sales in the morning and opening up the house, complete with beating the rugs and long afternoons dusting off the shelves. For those of us who live here year-round, spring-cleaning has long since happened. This is the weekend when quiet turns to bustle on the main streets of most towns in the Catskills, and we gear up for the season.