Art The exhibit Rhythms of Modern Life: British Prints 1914–1939 shows the sharp, mechanical-feeling prints that set the artistic tone for the future. Museum of Fine Arts. Read Bostonist's preview of the show. Runs through June 1. Fashion Put away your spindles. Fashionistas can flash forward to the 21st century at Seamless, which showcases "experimental works in computational apparel design." The dry-witted Steven Rosengard of Project Runway 4 will be hosting, and Red Sox......