issue2550899 Migrate setup.py to setuptools Also fixes issue2550866 'pip install --editable .' fails Installing roundup requires setuptools package which is available in most OS distrobutions or via pip. Patch by John Kristensen (jerrykan); additional doc changes (upgrade.txt, RELEASE.txt) John Rouillard.

try:
    # Python 3+.
    from xmlrpc import client, server
    server.SimpleXMLRPCDispatcher
except (ImportError, AttributeError):
    # Python 2.
    import xmlrpclib as client  # noqa: F401
    import SimpleXMLRPCServer as server