Enhancement

• Now you can get Supported Versions of Swoole
• More friendly error messages (0412f44) (09a4883) (@twose)
• Prevent endless loops that may occur in some special systems (069a009) (@matyhtf)
• Add driver in PDOConfig (swoole/library#8) (@jcheron)

Fixed

• Fixed http2_session.default_ctx double free (bddbb9b) (@twose)
• Fixed uninitialized http_context (ce77c64) (@twose)
• Fixed typo in Table (may lead to memory errors) (db4eec1) (@twose)
• Fixed status error when kill USR2 and no set task_num (e437827) (@GXhua)
• Fixed incomplete raw-content of HTTP request (#3079) (#3085) (@hantaohuang)
• Fixed static handler (when the file content is empty, server should not respond 404) (#3084) (@Yurunsoft)
• Fixed http_compression_level not work (16f9274) (@twose)
• Fixed null pointer error of Coroutine HTTP2 Server caused by no handle (ed68098) (@twose)
• Fixed option socket_dontwait not work (2758937) (@matyhtf)
• Fixed double zend::eval (#3099) (@GXhua)
• Fixed HTTP2 Server null pointer error (respond after connection is closed) (#3110) (@twose)
• Fixed PDOStatementProxy::setFetchMode missing arguments (swoole/library#13) (@jcheron)