Adjust release process tagging

[brson]

We need to generate thanks.rlo before the release, but the way we did it this time, by tagging prior to releasing is incorrect. Need a different way.

[brson]

@steveklabnik This issue is mostly about thanks.rlo. The issue at hand is that we can't make the tag until after the release, so we need a different way to tell thanks about the commit. I'd suggest we just use a temporary thanks-1.16.0 tag, which would mean thanks probably needs some logic to use either the real tag or the thanks tag.

[steveklabnik]

i wonder if we could use the branch for thanks pre-release, maybe that'd work?

really it's about a version ref more than a literal tag

[brson]

Yeah that's fine. Whatever is easiest for thanks. If you can tell it to load data for 1.16 from the 'stable' branch that would require nothing on the Rust side.

[steveklabnik]

I can, it'd require modifying some things, but it is easier and cleaner than a special tag for thanks.

[steveklabnik]

Thanks has been fixed; we can build off of the stable branch when making a new release.