.arcconfig

bundle: consistently keep a list of stringified revisions in "revs"

Before this patch, "revs", in the "not base" branch, would be a list
of mixed integral revnums, hex nodeids, and branch names. After this
patch, they're all strings. They can still be a mix of hex nodeids and
branch names, but the important thing for my future patches is that
they're consistently in string form.

Differential Revision: https://phab.mercurial-scm.org/D3049

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}