Backward compatibility Break

• Modify SWOOLE_HOOK_ALL to contain SWOOlE_HOOK_CURL (#3606) (@matyhtf)
• Remove ssl_method and Support ssl_protocols (#3639) (@Yurunsoft)

New APIs

• Added firstKey and lastKey (swoole/library#51) (@sy-records)

Enhancement

• Added open_websocket_ping_frame, open_websocket_pong_frame (#3600) (@Yurunsoft)

Fixed

• Fixed fseek ftell file larger than 2G bug (#3619) (@Yurunsoft)
• Fixed Socket barrier bug (#3627) (@matyhtf)
• Fixed http proxy handshake bug (#3630) (@matyhtf)
• Fixed a problem with parsing the HTTP header when send chunk data (#3633) (@matyhtf)
• Fixed zend_hash_clean assertion failure (#3634) (@twose)
• Fixed can't remove broken fd from event loop (#3650) (@matyhtf)
• Fixed crash when receiving invalid packet (#3653) (@matyhtf)
• Fixed array_key_last (swoole/library#46) (@sy-records)

Kernel

• Code optimization (#3615) (#3617) (#3622) (#3635) (#3640) (#3641) (#3642) (#3645) (#3658) (@matyhtf)
• Reduce unnecessary memory operation to improve write performance (#3620) (@matyhtf)
• Refactor aio (#3624) (@Yurunsoft)
• Added readlink/opendir/readdir/closedir hook (#3628) (@matyhtf)
• Improve swMutex_create, add SW_MUTEX_ROBUST (#3646) (@matyhtf)