- Pace the posting of comments, to avoid hitting GitHub API abuse rate limiting

- Paginate comments, to avoid posting only the first 30
- Preserve the order of comments when reposting them in the new issue
- Format comment headers more like Google’s GitHub Issue Mover
- Improve status output during migration
- Preserve status of migrated issue
- Bump version, add package-lock.json

Author: GeoffreyBooth