A command line utility written in Go to do some image operations.
Why not Photoshop, The GIMP or ImageMagick?
I know that these tools do what I want to do here and much more. But I wanted to understand some
algorithms and learn some Go.
Up to this moment, the only operation in blzimg is the lightest operation. This operation reads
every pixel from a list of images and, for a position (x,y), the final image will have the lightest
pixel at that position.