* bug-fix: reintroduce _modules.prepare for backwards compatibility
2.3.1
* [breaking change] remove ``_modules.prepare`` and ``_modules.download_and_install`` * [breaking change] move ``_modules.s3_download`` to ``_files.s3_download`` * feature: support for Bash commands and Python scripts
2.3.0
* feature: Allow for dynamic nginx.conf creation * feature: Provide support for additional environment variables. (http_port, safe_port_range and accept)
2.2.7
* feature: Making pip install less noisy * bug-fix: Stream stderr instead of capturing it when running user script
2.2.6
* feature: Make it optional for run_module method to wait for the subprocess to exit * feature: Allow additional sagemaker hyperparameters to be stored in TrainingEnv
2.2.5
* feature: Transformer: support user-supplied ``transform_fn``