Library extension

Hi @danini,

This is not an issue, it is a question. I couldn't find a better tab to ask this.

I am working on a problem of the form `A * x = y`, and I was wondering if it is possible to use your library for that.

Do you think it is possible? If so, how hard would it be? Also, where would be the best starting point?

Thank you,
Paulo Araujo 