add switch for closing connections

Author: Jhut89

src/Requests/MailchimpConnection.php

@@ -179,10 +179,13 @@ private function setHandlerOptionsForMethod()
 
     /**
      * Executes a connection with the current request and settings
+     *
+     * @param bool $close close this connection after execution
+     *
      * @return MailchimpResponse
      * @throws MailchimpException
      */
-    public function execute()
+    public function execute($close = true)
     {
         $this->response = $this->executeCurl();
         if (!$this->response) {
@@ -197,6 +200,10 @@ public function execute()
             strlen($this->response)
         );
 
+        if ($close) {
+            $this->close();
+        }
+
         if ($this->isSuccess()) {
             return new SuccessResponse(
                 $this->headers,