[Acme] "Status" field clarification

[Richard Barnes <[e-mail]>]

Hey all,

We had a couple of GitHub issues and mailing list posts expressing
confusion about the "status" field in ACME objects.  To try to clear all of
that up, I've posted a PR that lays out required state transitions and
aligns the field descriptions with that description.  All the description
should look very familiar.  The only innovation is to introduce a "ready"
state on orders, to give clients an easy way to know when to finalize.

https://github.com/ietf-wg-acme/acme/pull/400

As you're probably aware the I-D deadline is Monday, so please send
comments ASAP.  If I don't hear anything back from this list, I'll confer
with my fellow editors and we'll make a unilateral decision for us to
discuss in London (and obviously roll back if needed).

Thanks,
--Richard