updated for version 7.3.636

Problem:    Not all zero-width matches handled correctly for "gn".
Solution:   Move zero-width detection to a separate function. (Christian
            Brabandt)

src/version.c

@@ -719,6 +719,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    636,
 /**/
     635,
 /**/