updated for version 7.3.556
Problem:    Compiler warnings on 64 bit Windows.
Solution:   Add type casts. (Mike Williams)
diff --git a/src/version.c b/src/version.c
index d3bb184..9dcb811 100644
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    556,
+/**/
     555,
 /**/
     554,