### Documentation
- 📝 fix AutoStrategy docs to reference CS_WORKSPACE_CRN not CS_REGION
### Features
- add AutoStrategyBuilder, Option<T> KeyProvider, and SecretKey::from_hex
### Fixes
- 🔥 remove unreleased AutoStrategy::new() deprecated method
- 🩹 remove unnecessary bytes.clone() and improve MissingWorkspaceCrn message
- 🩹 address PR review feedback
### Refactoring
- ♻️ replace with_region with with_workspace_crn and add