Do not print() within Modules

Allow developers to control what is printed in their applications (and where) by only using a logger within module code.

Even after disabling loggers, I was getting DEBUG information printing to stdout. I tried a lot of things, and got pretty desperate...

loggers = [logging.getLogger(name) for name in logging.root.manager.loggerDict]
for logger in loggers:
    try:
        logger.removeHandler(sys.stderr)
    except Exception:
        pass
    logger.setLevel(0)
    logger.disabled = True
    logger.propagate = False

Then I found print statements in the module.

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This uses the existing logger instead of print. There are also some small fixes to technically incorrect Exception statements.