Support GalacticOptim for unconstrained and bound constrained optimization

[mohamed82008]

Would be nice to support GalacticOptim using the same interface here.

[jlperla]

You mean having GalacticOptim calling this interface? Then that would be great! And why not use this as an opportunity to get the galacticoptim interface to support all of these sorts of constraints?

[mohamed82008]

Well there is SciML/Optimization.jl#123 so it's not clear which will call which. I might just specialize here in constrained optimization.

[jlperla]

Thanks. Yeah, my dream is to only use galacticoptim as my universal interface for all optimizers (which is what its purpose) so it seams to make sense that it would call this package rather than the other way around. But so far in the interfaces there, it hasn't had enough love on getting the constrained optimization interface correct - so maybe calling this package would be a good resaon to do so.

[mohamed82008]

Closing this since GO/Optimization.jl wraps Nonconvex.