patch 7.4.1559
Problem:    Passing cookie to a callback is clumsy.
Solution:   Change function() to take arguments and return a partial.
diff --git a/src/version.c b/src/version.c
index ac23c50..eb42b32 100644
--- a/src/version.c
+++ b/src/version.c
@@ -744,6 +744,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1559,
+/**/
     1558,
 /**/
     1557,