Copyright 2010 Kevin Ryde

This file is part of Image-Base-PNGwriter.

Image-Base-PNGwriter is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 3, or (at
your option) any later version.

Image-Base-PNGwriter is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License along
with Image-Base-PNGwriter.  If not, see <http://www.gnu.org/licenses/>.


Version 2, July 2010
    - 4-digit hex colours too
    - use pngwriter circle() when possible

Version 1, June 2010
    - the first version
