rank(::SVD) method

[ajinkya-k]

Hello! There is no rank method for SVD objects. The rank(::AbstractMatrix) method already uses an SVD internally, but calling rank on an SVD object itself throws an error. I implemented this along with test code and submitting a PR shortly.

[ajinkya-k]

Thanks for closing this. Do we need to document this addition in a change log somewhere? Perhaps NEWS.md?

[jishnub]

That's a good point. With the separation of the repos, I'm unsure how the NEWS.md updates will work. Perhaps @KristofferC might be able to suggest the right approach.

[ajinkya-k]

Thanks. Do we need to reopen this issue?

[jishnub]

I don't think we need to reopen the issue. The news entry may be added separately once we figure out the steps.