Adds an optional source_address parameter to socket.create_connection().

For use by issue3972.
diff --git a/Misc/NEWS b/Misc/NEWS
index 19b9d13..5f9322d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -62,6 +62,8 @@
 Library
 -------
 
+- socket.create_connection now accepts an optional source_address parameter.
+
 - Issue #5511: now zipfile.ZipFile can be used as a context manager.
   Initial patch by Brian Curtin.