updated for version 7.3.670

Problem:    Python: memory leaks when there are exceptions.
Solution:   Add DICTKEY_UNREF in the right places. (ZyX)

src/version.c

@@ -719,6 +719,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    670,
 /**/
     669,
 /**/