[montecarl]

I've written several frameworks for optimization and the approach here of defining special objective functions works quite well. I like the look of this and would love to try it out soon.

This is a small thing, but I'm really happy to see that their L-BFGS line search algorithm supports a maximum step size. Many numerical optimization libraries do not offer this simple feature, which is critical if your goal is to find a minimum that is close to the initial starting location. This is important in atomistic geometry optimization.