[boost] [gil::io] Feedback for scanline_read_iterator

Hi all, I'm getting close to finally commit the new io extension for boost::gil. As it was required from the boost review I have implemented a basic image_read_iterator to read large images. I would like to get some feedback on my interface and maybe on the actual implementation, as well. I must admit this is my first iterator that I have designed and implemented from scratch with some help by other people. The latest io code can be found here via svn: http://code.google.com/p/gil-contributions/source/browse/#svn%2Ftrunk%2Fgil_... A basic usage of the code is here: http://pastebin.com/3E7KpfwE Thanks! Christian