add request to exception even for timeouts as we suspect mailchimp to…

… be timing out instead of properly returning an error

includes/api/class-api-v3-client.php

@@ -172,7 +172,7 @@ private function get_headers() {
   private function parse_response( $response ) {
 
     if( $response instanceof WP_Error ) {
-      throw new MC4WP_API_Connection_Exception( $response->get_error_message(), (int) $response->get_error_code() );
+      throw new MC4WP_API_Connection_Exception( $response->get_error_message(), (int) $response->get_error_code(), $this->last_request );
     }
 
     // decode response body