Include NumPy BLAS/LAPACK info in client.get_versions()

At the risk of overloading `client.get_versions()` with info, it would be handy to be able to check the NumPy BLAS/LAPACK linkage in here. This can be really helpful when debugging a slow computation or a very strange segfault that might be BLAS or LAPACK related. One way at this info is `numpy.__config__.show()`, but that might be too heavy for `client.get_versions()`. Open to other ways to include this info if there are suggestions.