Add config setting

Author: bencroker

src/config.php

@@ -24,6 +24,12 @@
          */
         'registerScript' => true,
 
+        /**
+         * Whether the session should be closed when the event stream begins.
+         * This is useful to allow other requests to be processed while the event stream is being sent.
+         */
+        'shouldCloseSession' => false,
+
         /**
          * The name of the signals variable that will be injected into Datastar templates.
          */