updated for version 7.3.683
Problem:    ":python" may crash when vimbindeval() returns None.
Solution:   Check for v_string to be NULL. (Yukihiro Nakadaira)
diff --git a/src/version.c b/src/version.c
index 143657e..62e0f4b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -720,6 +720,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    683,
+/**/
     682,
 /**/
     681,