Issue #15841: The readable(), writable() and seekable() methods of io.BytesIO
and io.StringIO objects now raise ValueError when the object has been closed.
Patch by Alessandro Moura.
diff --git a/Misc/ACKS b/Misc/ACKS
index 2a93d66..87200ec 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -602,6 +602,7 @@
 Paul Moore
 Derek Morr
 James A Morrison
+Alessandro Moura
 Pablo Mouzo
 Ruslan Mstoi
 Sjoerd Mullender