Issue #15424: Add a __sizeof__ implementation for array objects.

Patch by Ludwig Hähne.
diff --git a/Misc/NEWS b/Misc/NEWS
index 99812d2..5a4d71b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -101,6 +101,9 @@
 Library
 -------
 
+- Issue #15424: Add a __sizeof__ implementation for array objects.
+  Patch by Ludwig Hähne.
+
 - Issue #13052: Fix IDLE crashing when replace string in Search/Replace dialog
   ended with '\'. Patch by Roger Serwy.