patch 8.1.0678: text properties as not adjusted for inserted text

Problem:    Text properties as not adjusted for inserted text.
Solution:   Adjust text properties when inserting text.

src/version.c

@@ -799,6 +799,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    678,
 /**/
     677,
 /**/