What's Changed

• Accept any single input by @vowelparrot in https://github.com/hwchase17/langchain/pull/6888
• Throw error if evaluation key not present by @vowelparrot in https://github.com/hwchase17/langchain/pull/6874
• Cassandra support for chat history using CassIO library by @hemidactylus in https://github.com/hwchase17/langchain/pull/6771
• move octo notebook by @hwchase17 in https://github.com/hwchase17/langchain/pull/6901
• chore: NebulaGraph prompt optmization by @wey-gu in https://github.com/hwchase17/langchain/pull/6904
• Add API Header for Amazon API Gateway Authentication by @sunbc0120 in https://github.com/hwchase17/langchain/pull/6902
• Grobid parser for Scientific Articles from PDF by @corranmac in https://github.com/hwchase17/langchain/pull/6729
• Re-add Support for SQLAlchemy <1.4 by @bradcrossen in https://github.com/hwchase17/langchain/pull/6895
• Support named vectors in Qdrant by @kacperlukawski in https://github.com/hwchase17/langchain/pull/6871
• Updated QA notebook by @HashemAlsaket in https://github.com/hwchase17/langchain/pull/6801
• support max_chunk_bytes in OpensearchVectorSearch to pass down to bulk by @superpan in https://github.com/hwchase17/langchain/pull/6855
• Add Input Mapper in run_on_dataset by @vowelparrot in https://github.com/hwchase17/langchain/pull/6894
• Add password to PyPDR loader and parser by @lucasiscovici in https://github.com/hwchase17/langchain/pull/6908
• Order messages in PostgresChatMessageHistory by @mattflo in https://github.com/hwchase17/langchain/pull/6830
• Add OpenAIMultiFunctionsAgent to import list in agents directory by @Tajcore in https://github.com/hwchase17/langchain/pull/6824
• Change code block color scheme by @jacoblee93 in https://github.com/hwchase17/langchain/pull/6945
• Add back in by @dev2049 in https://github.com/hwchase17/langchain/pull/6949
• redirect vecstores by @dev2049 in https://github.com/hwchase17/langchain/pull/6948
• Provided default values for tags and inheritable_tags args in BaseRun… by @Siraj-R-Khan in https://github.com/hwchase17/langchain/pull/6858
• Bagatur/openllm ensure available by @baskaryan in https://github.com/hwchase17/langchain/pull/6960
• release v220 by @baskaryan in https://github.com/hwchase17/langchain/pull/6962

New Contributors

• @corranmac made their first contribution in https://github.com/hwchase17/langchain/pull/6729
• @bradcrossen made their first contribution in https://github.com/hwchase17/langchain/pull/6895
• @HashemAlsaket made their first contribution in https://github.com/hwchase17/langchain/pull/6801
• @superpan made their first contribution in https://github.com/hwchase17/langchain/pull/6855
• @lucasiscovici made their first contribution in https://github.com/hwchase17/langchain/pull/6908
• @mattflo made their first contribution in https://github.com/hwchase17/langchain/pull/6830
• @Tajcore made their first contribution in https://github.com/hwchase17/langchain/pull/6824
• @Siraj-R-Khan made their first contribution in https://github.com/hwchase17/langchain/pull/6858

Full Changelog: https://github.com/hwchase17/langchain/compare/v0.0.219...v0.0.220