Since December 14th 2020, MDN has been running on the new GitHub-based Yari platform. This has a lot of advantages for MDN, but we've needed to make radical Changes to the way in which we handle localization. This is because we've ended up with a lot of unmaintained and out-of-date content in our non-English locales, and we want to manage it better in the future....we've needed to make radical changes to the way in which we handle...locales, as well as issue tracking. We recommend reading the...