Columbia’s spring festival season kicks off Saturday, March 7, as the 8th annual Cottontown Art Crawl returns from 10 a.m. to 4 p.m., transforming the historic Cottontown/Bellevue neighborhood into a one-day, open-air gallery. This year brings a record 215 local and regional artists setting up on front porches, sidewalks, and closed-off streets. Artists feature everything from paintings and photography to ceramics, jewelry, sculpture, and fiber art…