After four years of publishing on Medium, FreeCodeCamp is migrating all of its articles to its own open source publishing platform, a modified version of Ghost. The platform allows approved authors to cross-post their blog articles on the new FreeCodeCamp News site for free, without any ads. “Medium was a great place to publish because it helped a lot of people discover your articles. But the community has outgrown Medium,” FreeCodeCamp founder Quincy Larson said. “Medium has shifted to a…