Reading image files

[solidstate1991 via Digitalmars-d-learn]

After I couldn't figure out how to convert Imageformats' own 
format to my own (consequential read from IFImage resulted in a 
glitchy image after rendering the result) and I have no idea how 
DerelictFI works at all, I'm currently out of options. At least I 
need PNG and TGA (the latter is important as my rendering engine 
relies on transparencies), the best could be is to be able to 
read paletted bitmaps directly, which is a missing feature in 
Imageformats.