Repo needs `release-strategy.md` document

[nathan-weinberg]

Per the organization governance, this library needs to add a release-strategy.md doc to the docs/ folder - see the linked document for details

[github-actions]

This issue has been automatically marked as stale because it has not had activity within 90 days. It will be automatically closed if no further activity occurs within 30 days.

[JamesKunstle]

@courtneypacheco is this a devops item?