[not Eval] Unify expression: pth => path (#700) In the notebooks under `examples` directory, there are variables using either `pth` or `path` for the same purpose. For better readability, I think we should unify the expression.

Add download command for dataset (#23)

[not Eval] Unify expression: pth => path (#700) In the notebooks under `examples` directory, there are variables using either `pth` or `path` for the same purpose. For better readability, I think we should unify the expression.

Upgrade openai to >=1.0.0 (#1420) Migrates evals to the new version of openai-python. Ran the migration script, and then manually fixed issues with running tests/evals Test Plan: - unit tests - run `python -m evals.cli.oaievalset gpt-3.5-turbo test` - test make_me_pay (uses solvers) - run `python -m evals.cli.oaieval langchain/chains/llm_math bigrams --max_samples 20 --dry-run` - run the retrieval-completionfn example