I don't think it's particularly accurate to say Guido is maintaining
this module any more.
diff --git a/Modules/readline.c b/Modules/readline.c
index 706eb7a..ff06ddf 100644
--- a/Modules/readline.c
+++ b/Modules/readline.c
@@ -1,9 +1,6 @@
 /* This module makes GNU readline available to Python.  It has ideas
  * contributed by Lee Busby, LLNL, and William Magro, Cornell Theory
  * Center.  The completer interface was inspired by Lele Gaifax.
- *
- * More recently, it was largely rewritten by Guido van Rossum who is
- * now maintaining it.
  */
 
 /* Standard definitions */