update to v2.0.0-b4 version

change global.php config load time and logic
set context get server function available more time
delete unused comment and @CQAPISend
@CQCommand add start_with and end_with
set exceptions extended by ZMException
rename @SwooleSetup to @ZMSetup
fix quotes for global.php
fix LightCache empty presistence_path error
remove RemoteShell

src/ZM/Exception/RobotNotFoundException.php

@@ -12,7 +12,7 @@ use Throwable;
  * @package ZM\Exception
  * @since 1.2
  */
-class RobotNotFoundException extends Exception
+class RobotNotFoundException extends ZMException
 {
     public function __construct($message = "", $code = 0, Throwable $previous = null) {
         parent::__construct($message, $code, $previous);