patch 8.0.0021
Problem:    In the GUI when redrawing the cursor it may be on the second half
            of a double byte character.
Solution:   Correct the cursor column. (Yasuhiro Matsumoto)
diff --git a/src/version.c b/src/version.c
index b74ad2f..dc8e9cf 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    21,
+/**/
     20,
 /**/
     19,