Created with ImageMagick then renamed: convert lena.ppm lena.sgi
Created with ImageMagick then renamed: convert lena.ppm -monochrome lena.sgi
Created with ImageMagick: convert transparent.png transparent.sgi
Sanity tests for SgiImagePlugin.py
flake8
Remove stray print
If we can't read a file due to unsupported compression, raise an error
Merge pull request #803 from hugovk/SgiImagePlugin

Sanity tests for SgiImagePlugin.py