Nonlinear solvers

[mikolalysenko]

Though they aren't usually as easy to use out of the box as other methods, it would be nice to have maybe a few fmincon type modules for generic nonlinear optimization/root finding.

These things tend to be a little hit-and-miss, but with hand holding they can solve some very impressive problems.

An implementation of these concepts which is very impressive the CERES solver by Google. I think it should be possible to adapt some of the ideas and designs in that project to work in SciJS in some more modular way.