updated for version 7.3.028

Problem:    Signs don't show up. (Charles Campbell)
Solution:   Don't use negative numbers.  Also assign a number to signs that
            have a name of all digits to avoid using a sign number twice.

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    28,
 /**/
     27,
 /**/