Swift Transformers 1.0 release makes Tokenizers and Hub first-class; breaking API changes require migration

AI Impact Summary

Swift Transformers 1.0 formalizes on-device model tooling on Apple Silicon, making Tokenizers and Hub first-class modules and aligning with Modern Core ML APIs and MLTensor. The release signals a shift toward MLX-powered workflows and agentic use cases, with stronger integration hints via swift-jinja and a focus on locally sourced inference and templates. Because 1.0 introduces breaking API changes, developers relying on previous import structures will need the migration guide and should adjust imports to Tokenizers and Hub to minimize disruption.