Steps, so that others can know how to upgrade later:
* Alter entry in package.json and run `npm i` and then `npx grunt update-ace` to update.
* Test locally for CSS, JS, and JSON pages (as the most-affected types).
* Verify code diffs and add to git staging manually.
* Update foreign-resources.yaml entry manually.
Bug: T342387
Change-Id: I3566e8271ce37807f7d24867680d8229aa97302c
Also move to modules/lib/ like in other repos. As we're using the build
step rather than a direct release, let's leave it as doc-only, but this
at least makes the process more clear.
Also add the README.md and CHANGELOG.md files like we do for others.
Change-Id: I3566e8271ce37807f7d24867680d8229aa97302b
