Twitter’s epic bust up with developers several years ago was one of the bigger bumps in the company’s rocky history, so now, as the social media company is working to reboot the business under new CEO Jack Dorsey, it kicked off its big developer event with a key message: an apology for Twitter’s past behavior and a commitment to try to make it better. —Twitter CEO Dorsey Apologizes To Developers, Says He Wants To “Reset” Relations