• [FEATURE] Use "no-progress timeout" after which connection is closed.
• [BUGFIX] Select new SCID when current SCID is retired.
• [BUGFIX] Don't warn about dropped Initial packet sequence gaps during mini/full handoff.
• [BUGFIX] Send correct conn error when HTTP/3 frame is truncated.
• [BUGFIX] Mini conn: consider amplification when deciding to return TICK_SEND.
• [BUGFIX] Don't double-count tag length in amplification logic.
• [BUGFIX] Don't squeeze out lone path challenges.
• [BUGFIX] Log messages dealing with scheduled packet queue squeezing.
• [BUGFIX] don't wipe current path if no path challenge responses come back.
• [BUGFIX] When path is reset, don't lose path_id which is used for logging.
• Downgrade flow control violations to info log level from warnings.
• Fix connection cap extra check, avoid checks in nested calls.
• Fix some unit tests when extra checks are enabled.
• Use ls-hpack 2.2.1.
• Turn off unconditional extra checks for IETF clients.
• Extra checks: don't verify sent size of hello packets. Client changes DCID length and this check will fail.