Boris Feld <boris.feld@octobus.net> [Mon, 26 Feb 2018 13:59:30 +0100] rev 3506
evolve: update code for not implicitly converting ctx to revision
Mercurial core 38f480502043 removed the capacity to implicitly convert
contexts to revisions using `int(ctx)`. Update Evolve code to explicitly call
rev instead.