The list of contributors, in alphabetical order, is as follows.  The
principal areas that each contributed to are listed in addition.

Philippe Beaudoin		<phb.emaj@free.fr>
		implementation in plpgsql (initial idea taken from
        Andreas Scherbaum's table_log contrib)

With some useful comments from:
- JP.Argudo and Dalibo team.
- K.Rosensteel (Bull)
- R.Dunklau