Package for Sage

[penguian]

Ultimately, after other issues are closed, submit this package for scrutiny to be adapted as a Sage package.
See (e.g.)
http://doc.sagemath.org/html/en/faq/faq-contribute.html
http://doc.sagemath.org/html/en/developer/packaging.html
http://doc.sagemath.org/html/en/developer/coding_in_python.html

[mkoeppe]

See https://trac.sagemath.org/ticket/31164