Update to ID-09

v0.9.0

Update to ID-09: spec no longer specifies maximum values

Fix memory leaks in decoder

v0.8.3

Update version to 0.8.3

Check dynamic table usage errors

Check dynamic table usage errors when processing header blocks

If prefix is non-zero, the largest reference must be used.  If it is
zero, no dynamic table references are allowed.

[API] Add two flags to control history and dynamic table use

• LQEF_NO_HIST_UPD causes the encoder not to modify header field history.
• LQEF_NO_DYN causes the encoder not to use the dynamic table, either for reading or for writing.

Fix: issue TSU when encoder uses non-default table size

v0.8.0

Fix bug in new unit test: initialize int decode state

Optimize encoder: use XXH to search both static and dynamic tables

v0.7.2

Update version to 0.7.2

Initial release: support Internet Draft QPACK-07

v0.7.0

Update version to 0.7.0, signifying support for ID qpack-07