Features & bugfixes

- Feature: added new getFirstHeader to Request object that will return the first header found from array list- used to simplify the code.
- Feature: added new InputHandler::getValueFromArray method that loops through input-items to ensure that value is always returned.
- Fixed calling getUrl with array as parameters option throws error.
- Fixed `SimpleRouter::getUrl` having wrong nullable return type.

src/Pecee/SimpleRouter/ClassLoader/ClassLoader.php

@@ -11,7 +11,7 @@ class ClassLoader implements IClassLoader
      *
      * @param string $class
      * @return object
-     * @throws NotFoundHttpException
+     * @throws ClassNotFoundHttpException
      */
     public function loadClass(string $class)
     {