[CLEANUP] Cleaned up code

- Change variable $values to $settings in Route::setSettings method.
- Added return types to methods.
- Added type to method variables.
- Change ClassNotFoundException so required parameters are first.

src/Pecee/SimpleRouter/ClassLoader/ClassLoader.php

@@ -16,7 +16,7 @@ class ClassLoader implements IClassLoader
     public function loadClass(string $class)
     {
         if (class_exists($class) === false) {
-            throw new ClassNotFoundHttpException(sprintf('Class "%s" does not exist', $class), 404, null, $class);
+            throw new ClassNotFoundHttpException($class, null, sprintf('Class "%s" does not exist', $class), 404, null);
         }
 
         return new $class();
@@ -34,4 +34,4 @@ class ClassLoader implements IClassLoader
         return \call_user_func_array($closure, $parameters);
     }
 
-}
+}