cargo run --quiet -- --help 
Usage: mirage <COMMAND>

Commands:
  blur       blur an image by a given percentage
  brighten   brighten an image by given amount
  crop       crop an image to x, y, width, height
  rotate     rotate an image by the given degrees, valid values 90, 180 or 270
  generate   generate a new image in outfile
  invert     invert an image from infile to outfile
  grayscale  convert an image to grey scale
  fractal    generate a fractal image in the file provided
  help       Print this message or the help of the given subcommand(s)

Options:
  -h, --help  Print help