Thank you for contributing to LangChain!

Checklist:

- [ ] PR title: Please title your PR "package: description", where "package" is whichever of langchain, community, core, experimental, etc. is being modified. Use "docs: ..." for purely docs changes, "templates: ..." for template changes, "infra: ..." for CI changes.
  - Example: "community: add foobar LLM"
- [ ] PR message: **Delete this entire template message** and replace it with the following bulleted list
    - **Description:** a description of the change
    - **Issue:** the issue # it fixes, if applicable
    - **Dependencies:** any dependencies required for this change
    - **Twitter handle:** if your PR gets announced, and you'd like a mention, we'll gladly shout you out!
- [ ] Pass lint and test: Run `make format`, `make lint` and `make test` from the root of the package(s) you've modified to check that you're passing lint and testing. See contribution guidelines for more information on how to write/run tests, lint, etc: https://python.langchain.com/docs/contributing/
- [ ] Add tests and docs: If you're adding a new integration, please include
  1. a test for the integration, preferably unit tests that do not rely on network access,
  2. an example notebook showing its use. It lives in `docs/docs/integrations` directory.

Additional guidelines:
- Make sure optional dependencies are imported within a function.
- Please do not add dependencies to pyproject.toml files (even optional ones) unless they are required for unit tests.
- Most PRs should not touch more than one package.
- Changes should be backwards compatible.
- If you are adding something to community, do not re-import it in langchain.

If no one reviews your PR within a few days, please @-mention one of @baskaryan, @efriis, @eyurtsev, @hwchase17.