patch 7.4.920
Problem:    The rubydll option is not in the options window.
Solution:   Add the rubydll option.
diff --git a/src/version.c b/src/version.c
index a52dca9..eb418a7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    920,
+/**/
     919,
 /**/
     918,