[repository] provide a .new_session entry point
The current .connect only returns a `sessionid` which must be given to
repo._get_session(...) to get the real session object.
Related to #4151635.
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s repository side views, usually for notification"""