----------------------
* added "metadata" element to all JSON output.
* switched to using :mod:`argparse` for parsing. The only observable effect
of this is that ``--help`` and ``--version`` are now supported.
* added ``--format`` command line option.
* added ``--quiet`` and ``--verbose`` command line options.
* changed default diagnostic level from INFO -> WARNING.
* added :ref:`create_confluence_table` utility