migrate to actix-web beta 14 (#209)

actix-cors/tests/tests.rs

@@ -2,7 +2,10 @@ use actix_service::fn_service;
 use actix_utils::future::ok;
 use actix_web::{
     dev::{ServiceRequest, Transform},
-    http::{header, HeaderValue, Method, StatusCode},
+    http::{
+        header::{self, HeaderValue},
+        Method, StatusCode,
+    },
     test::{self, TestRequest},
     HttpResponse,
 };