What's Changed

• docs: Concepts by @leo-gan in https://github.com/hwchase17/langchain/pull/4734
• Clean up tests for pdf parsers by @eyurtsev in https://github.com/hwchase17/langchain/pull/4595
• Check poetry lock file by @eyurtsev in https://github.com/hwchase17/langchain/pull/4740
• Only run linkcheck against docs dir on PR by @eyurtsev in https://github.com/hwchase17/langchain/pull/4741
• [Feature] Add GraphQL Query Tool by @O-Roma in https://github.com/hwchase17/langchain/pull/4409
• Make serpapi base url configurable via env by @yanghua in https://github.com/hwchase17/langchain/pull/4402
• Add source field to metadata by @mvhensbergen in https://github.com/hwchase17/langchain/pull/4462
• Tweaks to the PowerBI toolkit and utility by @eavanvalkenburg in https://github.com/hwchase17/langchain/pull/4442
• added new links to Tutorials and YouTube pages by @leo-gan in https://github.com/hwchase17/langchain/pull/4746
• Jupyter Notebook Example for using Mongodb to store Chat Message History by @jj701 in https://github.com/hwchase17/langchain/pull/4436
• Dev2049/docs edit0 by @dev2049 in https://github.com/hwchase17/langchain/pull/4699
• llama-cpp: add gpu layers parameter by @hilarious-viking in https://github.com/hwchase17/langchain/pull/4739
• Update the milvus example by @shiyu22 in https://github.com/hwchase17/langchain/pull/4706
• Revert "Make serpapi base url configurable via env (#4402)" by @vowelparrot in https://github.com/hwchase17/langchain/pull/4750
• Add summarization task type for HuggingFace APIs by @whuwxl in https://github.com/hwchase17/langchain/pull/4721
• Fix Async Shared Resource Bug by @vowelparrot in https://github.com/hwchase17/langchain/pull/4751
• docs: added additional_resources folder by @leo-gan in https://github.com/hwchase17/langchain/pull/4748
• Exponential back-off support for Google PaLM api by @mtronci in https://github.com/hwchase17/langchain/pull/4001
• Update utils.py to make headless an optional argument by @d3n7 in https://github.com/hwchase17/langchain/pull/4745
• Fixing DeepLake Overwrite Flag by @anihamde in https://github.com/hwchase17/langchain/pull/4683
• Add Server Command by @vowelparrot in https://github.com/hwchase17/langchain/pull/4695
• fixed on_llm issue by @bjk95 in https://github.com/hwchase17/langchain/pull/4717
• Add Milvus and Zilliz Retrievals by @filip-halt in https://github.com/hwchase17/langchain/pull/4416
• Harrison/wiki loader by @hwchase17 in https://github.com/hwchase17/langchain/pull/4765
• Cassandra support for chat history (#4378) by @hwchase17 in https://github.com/hwchase17/langchain/pull/4764
• Persist Volume After Stop by @vowelparrot in https://github.com/hwchase17/langchain/pull/4763
• Update Tracing Walkthrough by @vowelparrot in https://github.com/hwchase17/langchain/pull/4760
• Version 171 by @dev2049 in https://github.com/hwchase17/langchain/pull/4788

New Contributors

• @mvhensbergen made their first contribution in https://github.com/hwchase17/langchain/pull/4462
• @hilarious-viking made their first contribution in https://github.com/hwchase17/langchain/pull/4739
• @shiyu22 made their first contribution in https://github.com/hwchase17/langchain/pull/4706
• @whuwxl made their first contribution in https://github.com/hwchase17/langchain/pull/4721
• @mtronci made their first contribution in https://github.com/hwchase17/langchain/pull/4001
• @anihamde made their first contribution in https://github.com/hwchase17/langchain/pull/4683
• @bjk95 made their first contribution in https://github.com/hwchase17/langchain/pull/4717

Full Changelog: https://github.com/hwchase17/langchain/compare/v0.0.170...v0.0.171