iRobot’s two newest Roombas bring more mopping The Roomba Combo i5 Plus (left) and Combo j5 Plus (right) are new robot vacuum mops from iRobot. | Images: iRobotiRobot is beefing up its robot mop offerings by launching two new combo models: the Roomba Combo j5 Plus ($799) and the Roomba Combo i5 Plus ($549). These are combination cleaning bots that can mop and sweep simultaneously and come w…