Log Message:
py-websockets: updated to 7.0

7.0:
websockets sends Ping frames at regular intervals and closes the connection if \ 
it doesn't receive a matching Pong frame. See \ 
:class:~protocol.WebSocketCommonProtocol for details.
Added process_request and select_subprotocol arguments to :func:~server.serve() \ 
and :class:~server.WebSocketServerProtocol to customize \ 
:meth:~server.WebSocketServerProtocol.process_request and \ 
:meth:~server.WebSocketServerProtocol.select_subprotocol without subclassing \ 
:class:~server.WebSocketServerProtocol
Added support for sending fragmented messages.
Added the :meth:~protocol.WebSocketCommonProtocol.wait_closed method to protocols.
Added an interactive client: python -m websockets <uri>.
Changed the origins argument to represent the lack of an origin with None rather \ 
than ''.
Fixed a data loss bug in :meth:~protocol.WebSocketCommonProtocol.recv: canceling \ 
it at the wrong time could result in messages being dropped.
Improved handling of multiple HTTP headers with the same name.
Improved error messages when a required HTTP header is missing.