updated for version 7.4.680
Problem:    CTRL-W in Insert mode does not work well for multi-byte
            characters.
Solution:   Use mb_get_class(). (Yasuhiro Matsumoto)
diff --git a/src/version.c b/src/version.c
index a43522e..b08c010 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    680,
+/**/
     679,
 /**/
     678,