Crain’s Chicago Business: Chicago magazine, a monthly owned by Tribune Publishing, has replaced its editor and publisher in the latest development of a management shake-up unleased by new owner Michael Ferro. Susanna Homan has been named the new publisher and editor-in-chief of the magazine. Until now, Homan led Splash, a society, arts and cultural news weekly produced by Chicago rival Wrapports and inserted in its Chicago Sun-Times.