Add limiter update API #9133.
Avoid creating temporary zip files when syncing data directory during cluster startup #9429.
Refactor: move /mqtt/sys_topics to generic /configs/sys_topics #9511.
Refactor: use POST not PUT for /users/{name}/change_pwd #9533.
Add compression functions zip, gzip, zip_compress in Rule-Engine and corresponding decompression functions #9573.
message.dropped hook when QoS2 message is resend by client with a same packet id, or 'awaiting_rel' queue is full #9487.