Add open issues suggested by effbot.

pep-0283.txt

@@ -32,6 +32,27 @@ Release Manager
     Barry Warsaw.  (Didn't have his finger on his nose in time. :)
 
 
+Open issues
+
+    There are some issues that may need more work and/or thought
+    before the final release (and preferably before the first beta
+    release).  For example:
+
+    - Set API issues; is the sets module perfect?
+
+    - A nicer API to open text files, replacing the ugly (in some
+      people's eyes) "U" mode flag.  There's a proposal out there to
+      have a new built-in type textfile(filename, mode, encoding).
+      (Shouldn't it have a bufsize argument too?)
+
+    - Fredrik Lundh's basetime proposal:
+      http://effbot.org/ideas/time-type.htm
+
+    - New widgets for Tkinter???
+
+    - Tk 8.4 update.
+
+
 Completed features for 2.3
 
     This list is not complete; e.g. missing are bool, PyMalloc, and