.arcconfig

revlog: introduce 'deltainfo' to distinguish from 'delta'

A 'delta' is a binary diff between two revisions, as returned by revdiff.
A 'deltainfo' is an object storing information about a delta, including
the 'delta' itself.
Formerly, it was stored in a 7-position tuple, which was less readable.

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