updated for version 7.3.584

Problem:    PyCObject is not always defined.
Solution:   Use PyObject instead.

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    584,
 /**/
     583,
 /**/