• [BUGFIX] Check whether ECN counts are set in ACK struct before using them.
• [BUGFIX] Calculate TLP timer correctly when only one packet is in flight.
• [BUGFIX] Min RTO delay is 200 milliseconds, not 1 second.
• [BUGFIX] Memory leak in QPACK decoder handler: discard hset when necessary.
• Allow retired and drained CIDs to be reused after a timeout.