Version 5.2.2

update

Update version constant to 5.2.0

Version 5.1.10

Update TCP connection status constants

Update Worker.php

Stricter HTTP header inspection

Fix "Workerman\Coroutine\Coroutine" not found

Merge pull request #1127 from lvluoyue/patch-2

fix: eventloop

Refactor pauseAccept property and related methods