Log Message:
Changes 1.4.0:
This release includes number of fixes for libnghttp2. We briefly explain notable \ 
bug fixes here. Previously, libnghttp2 ignored CONTINUATION frames if preceding \ 
HEADERS frame contained padding. The appearance of CONTINUATION is rare these \ 
days, but padding is used in some services already, and we may see CONTINUATION \ 
somewhere too. The second and third bugs are SETTINGS and HPACK dynamic table \ 
size related bugs. The second bug is that previously libnghttp2 did not shrink \ 
to minimum size of requested dynamic table size contained in SETTINGS frame sent \ 
from local endpoint if it contains several SETTINGS_HEADER_TABLE_SIZE. Now it is \ 
corrected, and libnghttp2 shrinks to the minimum size. The third bug is that due \ 
to the ambiguous text in RFC 7540 and 7541, we interpreted that if receiver \ 
received SETTINGS containing SETTINGS_HEADER_TABLE_SIZE, it always has to send \ 
dynamic table size update in the next compressed header block. But it turns out \ 
that it is not the intention of the 
specification author. The intended behaviour is the receiver is required to send \ 
dynamic table size update only when it really changed maximum dynamic table \ 
size. Depending on the SETTINGS_HEADER_TABLE_SIZE and the current maximum \ 
dynamic table size, the table size may not change.