What's Changed

• More missing type annotations by @eyurtsev in https://github.com/langchain-ai/langchain/pull/9406
• fixed a pal chain reference by @lkuligin in https://github.com/langchain-ai/langchain/pull/9387
• Cache .mypy_cache across lint runs. by @obi1kenobi in https://github.com/langchain-ai/langchain/pull/9405
• make openapi_schema_pydantic opt by @baskaryan in https://github.com/langchain-ai/langchain/pull/9408
• Update compatibility guide for pydantic by @eyurtsev in https://github.com/langchain-ai/langchain/pull/9396
• Revert "Update compatibility guide for pydantic (#9396)" by @baskaryan in https://github.com/langchain-ai/langchain/pull/9417
• Replaced instances of raising ValueError with raising ImportError. by @AashishSainiShorthillsAI in https://github.com/langchain-ai/langchain/pull/9388
• pydantic compatibility guide fix by @baskaryan in https://github.com/langchain-ai/langchain/pull/9418
• Update figure in OSS model guide by @rlancemartin in https://github.com/langchain-ai/langchain/pull/9399
• Do not bust poetry install cache when manually installing pydantic v2. by @obi1kenobi in https://github.com/langchain-ai/langchain/pull/9407
• Adds streaming for runnable maps by @jacoblee93 in https://github.com/langchain-ai/langchain/pull/9283
• Add lock on tee peer cleanup by @nfcampos in https://github.com/langchain-ai/langchain/pull/9446
• 📖 docstrings retrievers consistency by @leo-gan in https://github.com/langchain-ai/langchain/pull/9422
• Cache black formatting information across CI runs. by @obi1kenobi in https://github.com/langchain-ai/langchain/pull/9413
• Add kwargs to all other optional runnable methods by @nfcampos in https://github.com/langchain-ai/langchain/pull/9439
• Fix a dead loop bug caused by assigning two variables with opposite values. by @Holmodi in https://github.com/langchain-ai/langchain/pull/9447
• :eyes: docs: updated dependents by @leo-gan in https://github.com/langchain-ai/langchain/pull/9426
• Lint only on the min and max supported Python versions. by @obi1kenobi in https://github.com/langchain-ai/langchain/pull/9450
• doc: make install from source more clearer by @Lanznx in https://github.com/langchain-ai/langchain/pull/9433
• Corrected Sentence in router.ipynb by @PuneetDhimanShorthillsAI in https://github.com/langchain-ai/langchain/pull/9377
• Fixing spelling mistakes in fallbacks.ipynb by @AmitSinghShorthillsAI in https://github.com/langchain-ai/langchain/pull/9376
• bump 268 by @baskaryan in https://github.com/langchain-ai/langchain/pull/9455

New Contributors

• @Holmodi made their first contribution in https://github.com/langchain-ai/langchain/pull/9447
• @Lanznx made their first contribution in https://github.com/langchain-ai/langchain/pull/9433
• @PuneetDhimanShorthillsAI made their first contribution in https://github.com/langchain-ai/langchain/pull/9377
• @AmitSinghShorthillsAI made their first contribution in https://github.com/langchain-ai/langchain/pull/9376

Full Changelog: https://github.com/langchain-ai/langchain/compare/v0.0.267...v0.0.268