Change license to LGPLv3

[andreamazz]

Hi. I noticed that the original repository switched the license to LGPLv3 as stated in profmaad@9c7f067

Could you change the license in this fork as well by any chance?
I'm planning on using this in a open source library for a commercial product. This library can be used by customers, and having a non-infectious license would be best for them.

Thanks

I would also appreciate this.