vetiver 0.2.1

• Added support for keras (#164), recipes (#179), and luz (#187, @dfalbel).

• Moved where required_pkgs metadata is stored remotely, from the binary blob to plain text YAML (#176).

• Added an optional renv lockfile that can be stored remotely in model metadata, with a new check_renv argument for reading/writing (#154, #192).

• Exposed a new base_image argument for creating Dockerfiles (#182).

• Added new vetiver_deploy_sagemaker() function plus vetiver_endpoint_sagemaker() and other needed functionality for deploying on Amazon SageMaker (#186, @DyfanJones).

• Added new additional GET endpoint for model /metadata (#194).