* Bug fix for aspect-ratio handling (Glenn Randers-Pehrson <glennrp@home.com>).
* No more direct assignments of the PNG info structure members;
it's all done through the API now.
Changes include:
* gif2png.c: Added some explanatory comments.
* web2png: Added Python version check.
* License changed (with Alexander Lehman's and David Koblas's
permission) to the libpng/zlib license.
* Option-processing cleanup.
* discard optional preceding # on gif2png -b option value.
* Fix to RCS machinery in web2png.
* Added -b option to gif2png for painting transparent pixels
with a specified background color.
* 64-bit cleanliness patch for gif2png from Jesse Perry.
* Fixed an option-processing bug in web2png.
* Added -a option to web2png.
* Fix references in .inc/.css/.js files.
* John Hascall's patch for filtermode.
* gif2png man page now warns about potential browser problems.
* Use env in web2png's #! for portability.
* Several minor fixes.
Changes since version 1.1.1:
* Fixed a bug in configure that was preventing it from finding
the png library properly.
* Fixed a brown-paper-bag bug -- web2png ignored directory
arguments.
* Added capability to handle BACKGROUND tags and http URLs.
Thanks to Rob Reid <reid@astro.utoronto.ca>.