Issue #17462: Add a paragraph about advantages of argparse over optparse.

Patch by Anastasia Filatova.
diff --git a/Misc/ACKS b/Misc/ACKS
index 1cd18f4..1821682 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -411,6 +411,7 @@
 John Feuerstein
 Carl Feynman
 Vincent Fiack
+Anastasia Filatova
 Tomer Filiba
 Jeffrey Finkelstein
 Russell Finn