patch 8.0.0019
Problem:    Test_command_count is old style.
Solution:   Turn it into a new style test. (Naruhiko Nishino)
            Use more assert functions.
diff --git a/src/version.c b/src/version.c
index eb1c4ab..9e097af 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    19,
+/**/
     18,
 /**/
     17,