Pierre-Yves David <pierre-yves.david@octobus.net> [Mon, 29 Mar 2021 22:40:54 +0200] rev 47263
changelogv2: introduce a "changelogv2" feature
Right now, this means using revlogv2, but only for the changelog. We will have
the format more unique in future changesets.
Differential Revision: https://phab.mercurial-scm.org/D10660