[debian] Introduce a cubicweb-ctl3 binary package This packages conflicts with cubicweb-ctl binary which uses the python2 library. It is meant to ease upgrade of existing installation during the migration from python2 to python3: in particular, by installing cubicweb-ctl3, scripts calling "cubicweb-ctl" command should still work as before.

docutils
Twisted < 16.0.0
requests
webtest
cubicweb-blog
cubicweb-file >= 2.0.0
cubicweb-tag