Modified Files:
 	XMLSchema.py
        -- added a few convience methods, and 'disabled' a few methods
        to force a sane usage.

        __init__.py
        -- removed use of python logging module, and replaced it with
        the below.

 Added Files:
 	logging.py
        -- simple interface to log message to, can write your own
        logger class.  By default do no logging.

 ----------------------------------------------------------------------