Hyperframe

------------------

**Bugfixes**

- Fixed bug with the repr of ``AltSvcFrame``, where building it could throw
exceptions if the frame had been received from the network.

------------------

**Backwards Incompatible API Changes**

- Updated old ALTSVC frame definition to match the newly specified RFC 7838.
- Remove BLOCKED frame, which was never actually specified.
- Removed previously deprecated ``SettingsFrame.SETTINGS_MAX_FRAME_SIZE`` and
``SettingsFrame.SETTINGS_MAX_HEADER_LIST_SIZE``.

------------------

**API Changes (Backward-compatible)**

- Invalid PING frame bodies now raise ``InvalidFrameError``, not
``ValueError``. Note that ``InvalidFrameError`` is a ``ValueError`` subclass.
- Invalid RST_STREAM frame bodies now raise ``InvalidFramError``, not
``ValueError``. Note that ``InvalidFrameError`` is a ``ValueError`` subclass.
- Canonicalized the names of ``SettingsFrame.SETTINGS_MAX_FRAME_SIZE`` and
``SettingsFrame.SETTINGS_MAX_HEADER_LIST_SIZE`` to match their peers, by
adding new properties ``SettingsFrame.MAX_FRAME_SIZE`` and
``SettingsFrame.SETTINGS_MAX_HEADER_LIST_SIZE``. The old names are still
present, but will be deprecated in 4.0.0.

**Bugfixes**

- The change in ``3.1.0`` that ensured that ``InvalidFrameError`` would be
thrown did not affect certain invalid values in ALT_SVC frames. This has been
fixed: ``ValueError`` will no longer be thrown from invalid ALT_SVC bodies.

------------------

**Bugfixes**

- Correctly error when receiving Ping frames that have insufficient data.

------------------

**API Changes**

- Added new ``InvalidFrameError`` that is thrown instead of ``struct.error``
when parsing a frame.

**Bugfixes**

- Fixed error when trying to serialize frames that use Priority information
with the defaults for that information.
- Fixed errors when displaying the repr of frames with non-printable bodies.

------------------

**Bugfixes**

- Fix issue where unpadded DATA, PUSH_PROMISE and HEADERS frames that had empty
bodies would raise ``InvalidPaddingError`` exceptions when parsed.