The Mercury’s Fall Arts & Culture Preview doesn’t need a theme, but this year’s was obvious: Portland is building. Portland is rebuilding. Its arts and culture worlds have rolled up their sleeves and are breaking ground. Here are some great examples: If you loved this summer’s immensely popular Comedy in the Park series, you’ll want to read about the nonprofit behind it, Kickstand, and their brick and mortar clubhouse that’s on track to open when...