A change of maintainership for Mercurial

Because with Git, this kind of thing is always a "feature", whereas in any other tool it is a frequently-paraded "deal-breaker" that instantly sent the person opining on such matters back to Git, regardless of any accompanying loss of convenience. (But with the apparent benefit of silencing the gathered crowd who were pestering the individual concerned about not using Git - and having all their repositories on GitHub - in the first place.)