updated for version 7.4.176

Problem:    Dictionary.update() thows an error when used without arguments.
            Python programmers don't expect that.
Solution:   Make Dictionary.update() without arguments do nothing. (ZyX)

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    176,
 /**/
     175,
 /**/