Make delays in DatedFlight.Timing accept an array

Delays is an array of Delay, not an object. Fixes #178

src/main/java/com/amadeus/resources/DatedFlight.java

@@ -66,7 +66,7 @@ protected Timing() {
 
     private @Getter String qualifier;
     private @Getter String value;
-    private @Getter Delay delays;
+    private @Getter Delay[] delays;
   }
 
   @ToString