Remaining to-dos for version 4:
- More test coverage
- Alternative for schema directive visitor (add custom directives after creating federated schema)
- Document transforms, including directives
- Fix context injection
- IGraphQLComponentConfigObject documentation
- Fix composition examples
- Fix federations examples
- Revert composition examples to JS again
- Update readme
- Repository structure
- API
- Component options
- Imports / excludes docs reference to SubschemaConfig
- Move to latest stitch functionality in @graphql-tools/stitch (big change)