pngtodo.txt - list of things to do for libpng

improved dithering
multi-lingual error and warning message support
cHRM transformation
sRGB chunk handling
man pages for function calls and info_struct
final bug fixes
better documentation
better filter selection
   (counting huffman bits/precompression?  filter inertia?  filter costs?)
optional palette creation
histogram creation
support for application-defined chunk handlers
keep up with public chunks
better C++ wrapper/full C++ implementation?
text conversion between different code pages (Latin-1 -> Mac and DOS)
other languages (pascal?)
pull writer (is this really needed?)
comments of > 64K for DOS?
