Update TODO list.

Index: TODO
===================================================================
RCS file: /home/projects/pgsql/cvsroot/pgsql/doc/TODO,v
retrieving revision 1.306
diff -r1.306 TODO
3c3
< Last updated:		Fri Dec 15 17:44:57 EST 2000
---
> Last updated:		Thu Dec 21 14:12:04 EST 2000
31a32
> * Prevent BETWEEN from using duplicate nodes

doc/TODO

 TODO list for PostgreSQL
 ========================
-Last updated:		Fri Dec 15 17:44:57 EST 2000
+Last updated:		Thu Dec 21 14:12:04 EST 2000
 
 Current maintainer:	Bruce Momjian (pgman@candle.pha.pa.us)
 
@@ -29,6 +29,7 @@ PARSER
 * -redesign INSERT ... SELECT to have two levels of target list
 * have INTERSECT/EXCEPT prevent duplicates unless ALL is specified
 * SELECT col::DECIMAL(12,10); fails
+* Prevent BETWEEN from using duplicate nodes
 
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