- Update to version 1.14.0:
* lib: Make emit_header() return void since it always succeed
* lib: Add nghttp2_hd_deflate_hd_vec() deflate API to support
multiple buffer input
* lib: since hd_inflate_commit_indexed() always return 0,
remove the return value check in nghttp2_hd_inflate_hd_nv()
* lib: Use memeq() instead of lstreq() in lookup_token()
* lib: More strict stream state handling
* lib: Modify genlibtokenlookup.py to remove redundant header
comparisons and remove inline qualifier of lookup_token()
in genlibtokenlookup.py
* lib: Fix wrong tree operation to avoid cycle
* lib: Make get_max_index() return the max index in frame,
so we don't need to do extra calculation
* lib: Add nghttp2_on_invalid_header_callback
* lib: Log frame's stream ID for header debug logging
* doc: Remove old doc about differential encoding in HPACK
* doc: Document about ALPN in nghttpx howto
* nghttpx: Log error code from getsockopt(SO_ERROR) on first
write event
* nghttpx: Don't change pushed stream's priority
* nghttpx: Log backend connection failure in WARN level
* nghttpx: Fix bug that api and healthmon parameters do not work
with http2 proxy
* nghttpx: Add access log variable for backend host and port
* nghttpx: Use copy instead of const reference of backend group
* nghttpx: Reload configuration with SIGHUP
* nghttp: Adjust weight according to Firefox stable
* nghttp: Call error callback when invalid header field is
received and ignored