Resolve breaking change in Streamlit dependency.

Allow arbitrary Huggingface models in generation.py.

Minor README, comment changes.

Remove environ

Replace Robustness Gym dependency with Meerkat. Remove anonymized CNN/XSum datasets in favor of simpler quickstart using WikiNews. Simplified preprocessing scripts. Added sample loading scripts. Upgraded datasets library version. Assorted refactoring.

Update README.md

Remove conda install instructions due to issue with default pip

Fix two broken dependencies from robustnessgym.

Remove extra spaces and newlines by default to maintain consistency with cached files. Add --no_clean option to override this default behavior.

Remove en_core_web_sm from quickstart.sh since now specified in requirements files.

Allow range of torch versions and specify en-core-web-sm in install files.

Batch inputs to bertscore model to avoid OOM in long documents.

Add instructions for remote deployment.

Give more helpful error message when missing spaCy model.

Support "file" command-line argument.