Prima has got a Julia interface

The Julia interface of PRIMA is mainly due to the efforts of [Éric Thiébaut](https://github.com/emmt) and [Alexis Montoison](https://github.com/amontoison), who should receive all the credits.

Glad to see this! The mission/story behind PRIMA:

> Before he passed, Professor Powell had asked me and Professor Nick Gould to maintain his solvers. This is an honorable mission. To make the solvers more accessible, I started PRIMA. It is a project similar to the translation, interpretation, and annotation of Euclid’s Elements. It will make Powell's solvers easily understandable to everyone, not only the experts. Few people remember who translated Elements, but it is a job that must be done.

Making someone's work accessible to newer generations and improving upon it, is one of the best ways to pay respect to someone you admired. Kudos for all the tireless work you guys have put into this, in every aspect.

See also

- "Optimization Without Derivatives: Prima Fortran Version and Inclusion in SciPy": https://news.ycombinator.com/item?id=35959991

- "SciPy: Interested in adopting PRIMA, but little appetite for more Fortran code": https://news.ycombinator.com/item?id=35986906