Post #2704242

@nerdnz@cloudisland.nz @maltelau@expressional.social As a maintainer of a project that can't have history rewritten and that might have deadname-credited commits in history, it's important to make sure anyone who asks for mailmap treatment understands the part about how it does make them stand out, and does make an immutable record mapping their deadname to their current name, before just adding them to mailmap and potentially making things worse.