Remove a few TO DO items that are done or irrelevant.

lib/python/TAL/README

@@ -76,11 +76,6 @@ TO DO
 
 Here are some things that should be done.
 
-- Add calls to an expression compiler
-
-- Raise exceptions for all errors (currently it just prints to
-  stdout).
-
 - Provide a dummy implementation of evaluateStructure()?
 
 - Check for attempt to replace the documentElement.  (Exception: when
@@ -88,9 +83,6 @@ Here are some things that should be done.
 
 - Speed up findMacro()?
 
-- When using z:replace="structure ...", should make a copy of the
-  nodes; perhaps the data should be a documentFragment node?
-
 It's unclear on what to do about these items:
 
 - A comment (or other non-element node) before the documentElement.