patch 8.0.1356: using simalt in a GUIEnter autocommand inserts characters

Problem:    Using simalt in a GUIEnter autocommand inserts strange characters.
            (Chih-Long Chang)
Solution:   Ignore K_NOP in Insert mode. (closes #2379)
diff --git a/src/version.c b/src/version.c
index 0be4be4..50e3f16 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1356,
+/**/
     1355,
 /**/
     1354,