Update to reflect the current status of the configuration system.
Extensions must still be configured manually and there is currently one
set of extension key bindings for all platforms.

Bring NEWS.txt up to date.

Update CREDITS.txt and idlever.py for release.

M NEWS.txt
M config-extensions.def
M extend.txt
M help.txt
M idlever.py
diff --git a/Lib/idlelib/help.txt b/Lib/idlelib/help.txt
index 8bf15a1..96cedb8 100644
--- a/Lib/idlelib/help.txt
+++ b/Lib/idlelib/help.txt
@@ -153,15 +153,16 @@
 
 Python Shell window:
 
-	^C interrupts executing command
-	^D sends end-of-file; closes window if typed at >>> prompt
+	Control-c interrupts executing command
+	Control-d sends end-of-file; closes window if typed at >>> prompt
 
     Command history:
 
 	Alt-p retrieves previous command matching what you have typed
 	Alt-n retrieves next
-	Return while on any previous command retrieves that command
-	Alt-/ (Expand word) is also useful here
+	      (These are Control-p, Control-n on the Mac)      
+	Return while cursor is on a previous command retrieves that command
+	Expand word is also useful to reduce typing
 
     Syntax colors: