Log Message:
py-cherrypy: updated to 16.0.0

v16.0.0:
* :issue:1688: Removed  basic_auth and digest_auth tools and
  the httpauth module, which have been officially deprecated earlier
  in v14.0.0.
* Removed deprecated properties::
  - cherrypy._cpreqbody.Entity.type deprecated in favor of
    :py:attr:cherrypy._cpreqbody.Entity.content_type
  - cherrypy._cprequest.Request.body_params deprecated in favor of
    py:attr:cherrypy._cprequest.RequestBody.params
* :issue:1377: In _cp_native server, set req.status using bytes.
* :issue:1697: Fixed error on Python 3.7 with AutoReloader when
  __file__ is None.
* :issue:1713: Fix warning emitted during test run.
* :issue:1370: Fail with HTTP 400 for invalid headers.