updated for version 7.4.488
Problem:    test_mapping fails for some people.
Solution:   Set the 'encoding' option. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index b6f750c..e720782 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    488,
+/**/
     487,
 /**/
     486,