- update to 11.0.2:
* Fixed a deadlock in the :mod:`threading` implementation when
closing a connection without reading all messages.
* Restored the C extension in the source distribution.
* Backwards-incompatible changes
* The Sans-I/O implementation was moved.
* The ``connection`` module was renamed to ``protocol``.
* The ``connection.Connection``, ``server.ServerConnection``,
and ``client.ClientConnection`` classes were renamed to
``protocol.Protocol``, ``server.ServerProtocol``, and
``client.ClientProtocol``.
* If you instantiate :class:`~server.ServerProtocol` or
:class:`~client.ClientProtocol` directly, make sure you are
using keyword arguments.
* Closing a connection without an empty close frame is OK.
* .. admonition:: websockets 10.0 introduces a implementation
on top of :mod:`threading`.
* It may be more convenient if you don't need to manage many
connections and you're more comfortable with :mod:`threading`
than :mod:`asyncio`.
* It is particularly suited to client applications that
establish only one connection. It may be used for servers
handling few connections.
* See :func:`~sync.client.connect` and
:func:`~sync.server.serve` for details.
* Added ``open_timeout`` to :func:`~server.serve`.
* Made it possible to close a server without closing existing
connections.
* Added :attr:`~server.ServerProtocol.select_subprotocol` to
customize negotiation of subprotocols in the Sans-I/O layer.