Add support for multiple values of the same name type

[djc]

Fixes #81. This is a semver-incompatible change, so will need a version bump.

[djc]

@cpu want to take a look?

[cpu]

@cpu want to take a look?

Yes, thanks for the ping. I will look in the next day or so.

[cpu]

I think this seems OK relative to the existing API, but should have test coverage. Probably at minimum that when we generate a cert with a multi-value DN that we can round trip it through x509-parser. Maybe also some consideration for CSRs?

This is a semver-incompatible change, so will need a version bump.

I would be in favor of holding the release until there's more semver-incompatible work to justify the churn. It doesn't seem particularly urgent IMO.

[cpu]

I would be in favor of holding the release until there's more semver-incompatible work to justify the churn.

@djc thoughts on this point? I think there are a couple not-yet-merged PRs that might tip the scales since this one.

[djc]

I would be in favor of holding the release until there's more semver-incompatible work to justify the churn.

@djc thoughts on this point? I think there are a couple not-yet-merged PRs that might tip the scales since this one.

Yes, I think there's basically enough here to warrant a 0.15. But, I think we'd want to wait for #414?

[djc]

(Wrote up the sketch of a plan in #418.)