Robert Bastian

Unstable constructors will, of course, also be behind the unstable feature.

The unstable feature can toggle `#[doc(hidden)]` on the provider module and unstable constructors, this way semver checks and autocomplete will work correctly.

Breaking changes are not ok yet. I'm working on releasing 1.5, after which the breakage can begin.

The next few days

We have upstreamed this logic to the icu4x package/repo. We might still want to do this, but it's not a priority given that `native_toolchain_rust` does not support our needs right...

Hmm doesn't work

Going forward, `#[ignored]` will be for slow tests, but they still have to pass. Daily CI will run them.

I stomped all over this in https://github.com/unicode-org/icu4x/pull/6682, but I still think this is useful to merge. It would be nice to get the syntax highlighting to work on all code...

These need to be replaced by the `tools/graveyard` crate on crates.io.

* `icu_locid` * `icu_locid_transform`