chore(pkg): prepare release of version 1.0.1

J'aurais bien aimé proposer directement la version 1.0.1, mais l'automatisation est relou :

$ tox -e release-new
Error: There are some non-public commits.
Please, run `hg phase -p .` to publish your commits and rerun the command

Cette version sera utile pour cubicweb/cubicweb#1057