Credit Samuele Pedroni in the changelog

CHANGES.txt

@@ -31,7 +31,7 @@ Next release
 - Add a boolean program option ``killasgroup``, defaulting to false,
   if true when resorting to send SIGKILL to stop/terminate the process
   send it to its whole process group instead to take care of possible
-  children as well and not leave them behind.
+  children as well and not leave them behind.  Patch by Samuele Pedroni.
 
 3.0a10 (2011-03-30)
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