patch 9.0.1123: class function not implemented yet

Problem:    Class function not implemented yet.
Solution:   Implement defining and calling a class function.
diff --git a/src/version.c b/src/version.c
index 84fe1ba..531d7bc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1123,
+/**/
     1122,
 /**/
     1121,