This fixes all cases where the color profile was broken, and
libpng warns about. It also makes almost all textures indexed
instead of RGB where possible (textures that don't have
semi-transparent pixels).
- Use opaque texture for top+bottom of iron bar
- Add color variation for iron bar top/bottom
- Add paramat's texture to credits
- Update license info for paramat's textures
Auke Kok
Wuzzy
kilbith
David Gumberg
BlockMen