Release of new version 4.1.3

Author: jfcherng

CHANGELOG

@@ -3,6 +3,11 @@ VERSION 4  STRIP OUT THE SEQUENCEMATCHER
 ========================================
 
    Version 4.1 - Allow negative tabSize
+      20/02/2019 16:45  4.1.3  Fix Diff::getText()
+         a5171c8 Inline and remove Diff::getText()
+         be52d42 Fix Diff::getText() when $end is null
+         3a6259a Code tidy
+         1fd7935 Update option comments
       20/02/2019 15:04  4.1.2  update deps
          df25c88 Update jfcherng/php-sequence-matcher ^2.0
          0c7b425 Update readme