Doughnuts will have their day. The Mid-Continent Public Library’s Square One Small Business Services will present “The Business of Donuts with Jill Silva,” a panel discussion with local doughnut store owners, from 7-10 p.m. July 20 at the iWerx coworking facility, 1520 Clay St. in North Kansas City. According to Amy Fisher, who leads the Square One team, the event will feature how each presenter succeeded in the doughnut-making business…