patch 8.0.0619: GUI gets stuck if timer uses feedkeys()

Problem:    In the GUI, when a timer uses feedkeys(), it still waits for an
            event. (Raymond Ko)
Solution:   Check tb_change_cnt in one more place.
diff --git a/src/version.c b/src/version.c
index fa8b538..3d91495 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    619,
+/**/
     618,
 /**/
     617,