Bump library version

Author: DigiLive

tests/Diff/SimilarityTest.php

@@ -14,7 +14,7 @@
  * @author          Ferry Cools <[email protected]>
  * @copyright   (c) 2020 Ferry Cools
  * @license         New BSD License http://www.opensource.org/licenses/bsd-license.php
- * @version         2.2.1
+ * @version         2.3.0
  * @link            https://github.com/JBlond/php-diff
  */
 class SimilarityTest extends TestCase