I started adding support for working with Windows BMP files, writing was easy enough (since I haven't bothered with compression - yet), but the reading is proving a pain, since I think (de)compression is needed. Maybe I'm just lazy.
One thing I'm used to from The GIMP and other paint software is fountain fills. Currently the closest Imager has to that is Addi's gradient filter, which is very different to a normal fountain fill. My only problem with trying to write fountain fill code is that my math is a bit rusty.
I just need to kick those brain cells into submission, I suppose.