updated for version 7.3.284

Problem:    The str2special() function doesn't handle multi-byte characters
            properly.
Solution:   Recognize multi-byte characters. (partly by Vladimir Vichniakov)

src/version.c

@@ -709,6 +709,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    284,
 /**/
     283,
 /**/