Mercurial doesn't use semantic versioning. If tooling that depends on mercurial breaks in a mercurial update, this is often considered a mercurial regression, s

Mercurial doesn't use semantic versioning. If tooling that depends on mercurial breaks in a mercurial update, this is often considered a mercurial regression, so long as the tooling isn't using mercurial's internal APIs which have no backward compatibility guarantees. I do know that the person primarily behind kiln harmony left a while ago and now works at Khan Academy.