User blog comment:MisterWoodhouse/Social Activity, the 2010 Editor, and Unpausing Migrations/@comment-38479212-20200922182251

I still really need custom category tracks for achievements. As I said earlier, they are almost necessary on cosmology wikis, and I'm guessing this is a relatively minor feature so it should still be easy to update to MediaWiki. Could you please add it to the next update?