Log Message:
py-h2: updated to 3.1.1

3.1.1:

Bugfixes
- Ignore WINDOW_UPDATE and RST_STREAM frames received after stream
  closure.

3.1.0:

API Changes (Backward-Incompatible)
- ``h2.connection.H2Connection.data_to_send`` first and only argument ``amt``
  was renamed to ``amount``.
- Support for Python 3.3 has been removed.

API Changes (Backward-Compatible)
- ``h2.connection.H2Connection.send_data`` now supports ``data`` parameter
  being a ``memoryview`` object.
- Refactor ping-related events: a ``h2.events.PingReceived`` event is fired
  when a PING frame is received and a ``h2.events.PingAckReceived`` event is
  fired when a PING frame with an ACK flag is received.
  ``h2.events.PingAcknowledged`` is deprecated in favour of the identical
  ``h2.events.PingAckReceived``.
- Added ``ENABLE_CONNECT_PROTOCOL`` to ``h2.settings.SettingCodes``.
- Support ``CONNECT`` requests with a ``:protocol`` pseudo header
  thereby supporting RFC 8441.
- A limit to the number of closed streams kept in memory by the
  connection is applied. It can be configured by
  ``h2.connection.H2Connection.MAX_CLOSED_STREAMS``.

Bugfixes
- Debug logging when stream_id is None is now fixed and no longer errors.