patch 7.4.1360
Problem:    Can't remove a callback with ch_setoptions().
Solution:   When passing zero or an empty string remove the callback.
diff --git a/src/version.c b/src/version.c
index 4af3f65..916c52c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -748,6 +748,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1360,
+/**/
     1359,
 /**/
     1358,