Ooops. Seems I over-wrote the 0.4 version of my image library. Not to worry, there's a 0.5 out and the main difference is an added dependency on Xach's ZPNG library and it now has the ability to write PNG files (mainly added because I found myself needing to write an image with 372 different colours and it was easier adding PNG support than to write something that intelligently coerced different pixels together with minimal degradation to image quality).

I also suspect there's not that many actual users, so the impact should be minimal.