packaging: mark version as development version
Thsi help to reduce confusion for people using evolve from source
# define Mercurial extension metadata for evolution
#
# Copyright 2017 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
__version__ = '8.5.1.dev'
testedwith = '4.4.2 4.5.2 4.6.2 4.7 4.8 4.9'
minimumhgversion = '4.4'
buglink = 'https://bz.mercurial-scm.org/'