Add newline at end of file

Author: nicumicle

src/ExceptionCodes.php

@@ -54,4 +54,4 @@ class ExceptionCodes
     public const KEY_MATERIAL_IS_INVALID = 43;
     public const KEY_MATERIAL_IS_EMPTY = 44;
     public const KEY_ALGORITHM_IS_EMPTY = 45;
-}
+}