https://github.com/nicolewhite/algebra.js/pull/79
https://github.com/nicolewhite/algebra.js/pull/78
https://github.com/nicolewhite/algebra.js/pull/72
https://github.com/nicolewhite/algebra.js/pull/68
https://github.com/nicolewhite/algebra.js/pull/66
https://github.com/nicolewhite/algebra.js/pull/42
https://github.com/nicolewhite/algebra.js/pull/36
https://github.com/nicolewhite/algebra.js/pull/35
https://github.com/nicolewhite/algebra.js/pull/33
https://github.com/nicolewhite/algebra.js/pull/29
https://github.com/nicolewhite/algebra.js/pull/28
https://github.com/nicolewhite/algebra.js/pull/27
