Pierre-Yves David <pierre-yves.david@ens-lyon.org> [Tue, 28 Feb 2017 14:21:17 +0100] rev 1825
evolve: proactively detect bad version early
The extensions have been providing such error to the user for some time. So we
keep this explicit check (instead of some later errors).
The check is update to match out new version constraint.