#3573: idle now doesn't hungs if launched as: idle -e <directory>

Patch by Guilherme Polo.
diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 0a4f98e..4482be2 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -1,3 +1,10 @@
+What's New in IDLE 3.2.3?
+=========================
+
+- Issue #3573: IDLE hangs when passing invalid command line args
+  (directory(ies) instead of file(s)).
+
+
 What's New in IDLE 3.2.1?
 =========================