I see that the [specification/README.rst](https://github.com/theupdateframework/specification/blob/master/README.rst) now no longer calls the spec a draft, but the [specification/tuf-spec.md](https://github.com/theupdateframework/specification/blob/master/tuf-spec.md) itself (dated June 2018) still calls itself a draft. * What is the status of the spec? * Will there be a git tag when it is final? * How does the version number relate to the tuf implementation versions and [tuf/ROADMAP.md](https://github.com/theupdateframework/tuf/blob/develop/docs/ROADMAP.md)?