- Update to 6.0.0:
* API Changes (Backward-incompatible)
+ Introduce ``HyperframeError`` base exception class for all errors
raised within hyperframe.
+ Change exception base class of ``UnknownFrameError`` to
``HyperframeError``
+ Change exception base class of ``InvalidPaddingError`` to
``HyperframeError``
+ Change exception base class of ``InvalidFrameError`` to
``HyperframeError``
+ Invalid frames with wrong stream id (zero vs. non-zero) now raise
``InvalidDataError``.
+ Invalid SETTINGS frames (non-empty but ACK) now raise
``InvalidDataError``.
+ Invalid ALTSVC frames with non-bytestring field or origin now raise
``InvalidDataError``.
* API Changes (Backward-compatible)
+ Deprecate ``total_padding`` - use `pad_length` instead.
+ Improve repr() output for all frame classes.
+ Introduce Frame.explain(data) for quick introspection of raw data.
* Bugfixes
+ Fixed padding parsing for ``PushPromiseFrame``.
+ Fixed unchecked frame length for ``PriorityFrame``. It now correctly
raises ``InvalidFrameError``.
+ Fixed promised stream id validation for ``PushPromiseFrame``. It now
raises ``InvalidDataError``.
+ Fixed unchecked frame length for ``WindowUpdateFrame``. It now correctly
raises ``InvalidFrameError``.
+ Fixed window increment value range validation. It now raises
``InvalidDataError``.
+ Fixed parsing of ``SettingsFrame`` with mutual exclusion of ACK flag and
payload.
* Other Changes
+ Removed support for Python 2.7, 3.4, 3.5, pypy.
+ Added support for Python 3.8.