What's Changed

• Support using async callback handlers with sync callback manager by @nfcampos in https://github.com/langchain-ai/langchain/pull/10945
• LangServe by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11046
• Add input/output schemas to runnables by @nfcampos in https://github.com/langchain-ai/langchain/pull/11063
• add to load init by @baskaryan in https://github.com/langchain-ai/langchain/pull/11151
• Async support for OpenAIFunctionsAgentOutputParser by @hinthornw in https://github.com/langchain-ai/langchain/pull/11140
• milvus collections by @apurv101 in https://github.com/langchain-ai/langchain/pull/11148
• Xata chat memory FIX by @linancn in https://github.com/langchain-ai/langchain/pull/11145
• Fixed Typo Error in Update get_started.mdx file by addressing a minor typographical error. by @ShorthillsAI in https://github.com/langchain-ai/langchain/pull/11154
• Fix stop key of TextGen. by @akionux in https://github.com/langchain-ai/langchain/pull/11109
• LangServe: Clean up init files by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11174
• Expose lc_id as a classmethod by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11176
• Update Bedrock service name to "bedrock-runtime" and model identifiers by @mani2348 in https://github.com/langchain-ai/langchain/pull/11161
• LangServe: Add release workflow by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11178
• LangServe: Update langchain requirement for publishing by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11186
• temporarily skip embedding empty string test by @baskaryan in https://github.com/langchain-ai/langchain/pull/11187
• Fix anthropic secret key when passed in via init by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11185
• add anthropic scheduled tests and unit tests by @baskaryan in https://github.com/langchain-ai/langchain/pull/11188
• Rm additional file check for scheduled tests by @baskaryan in https://github.com/langchain-ai/langchain/pull/11192
• Add source metadata to OutlookMessageLoader by @ATelders in https://github.com/langchain-ai/langchain/pull/11183
• [OpenSearch] Add Self Query Retriever Support to OpenSearch by @naveentatikonda in https://github.com/langchain-ai/langchain/pull/11184
• [ElasticsearchStore] Improve migration text to ElasticsearchStore by @joemcelroy in https://github.com/langchain-ai/langchain/pull/11158
• update docs nav by @baskaryan in https://github.com/langchain-ai/langchain/pull/11146
• Add langserve version by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11195
• [Feat] Add optional client-side encryption to DynamoDB chat history memory by @jplock in https://github.com/langchain-ai/langchain/pull/11115
• Shared Executor by @hinthornw in https://github.com/langchain-ai/langchain/pull/11028
• LLMonitor Callback handler: fix bug by @hughcrt in https://github.com/langchain-ai/langchain/pull/11128
• This PR introduces support for '$vectorSearch' MQL stage, which is available with MongoDB Atlas 6.0.11 and 7.0.2. Users utilizing earlier versions of MongoDB Atlas need to pin their LangChain version to <=0.0.304, by @NoahStapp in https://github.com/langchain-ai/langchain/pull/11139
• add from_existing_graph to neo4j vector by @tomasonjo in https://github.com/langchain-ai/langchain/pull/11124
• Add add_graph_documents support for FalkorDBGraph by @gkorland in https://github.com/langchain-ai/langchain/pull/11122
• fix typo by @piotrm0 in https://github.com/langchain-ai/langchain/pull/11087
• Expanded version range for networkx, fixed sample notebook by @3coins in https://github.com/langchain-ai/langchain/pull/11094
• docs: Mendable Search Improvements by @nickscamara in https://github.com/langchain-ai/langchain/pull/11199
• Change type annotations from LLMChain to Chain in MultiPromptChain by @xcellentbird in https://github.com/langchain-ai/langchain/pull/11082
• fix: short-circuit black and mypy calls when no changes made by @malandis in https://github.com/langchain-ai/langchain/pull/11051
• Callback integration for Trubrics by @jeffkayne in https://github.com/langchain-ai/langchain/pull/11059
• Support add_embeddings for opensearch by @kennethchoe in https://github.com/langchain-ai/langchain/pull/11050
• chore: add support for TypeScript code splitting by @fynnfluegge in https://github.com/langchain-ai/langchain/pull/11160
• fix trubrics lint issue by @baskaryan in https://github.com/langchain-ai/langchain/pull/11202
• SearchApi integration by @dremeika in https://github.com/langchain-ai/langchain/pull/11023
• Synthetic Data by @paperMoose in https://github.com/langchain-ai/langchain/pull/9472
• LangServe: Relax requirements by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11198
• Add last_edited_time and created_time props to NotionDBLoader by @swimninja247 in https://github.com/langchain-ai/langchain/pull/11020
• LlamaCppEmbeddings: adds verbose parameter, similar to llms.LlamaCpp class by @ClementSicard in https://github.com/langchain-ai/langchain/pull/11038
• Support new version of tiktoken that are working with langchain (tag "^0.3.2" => "">=0.3.2,<0.6.0" and python "^3.9" =>">=3.9") by @tarrade in https://github.com/langchain-ai/langchain/pull/11006
• Typo fix to MathpixPDFLoader - changed processed_file_format default … by @jreinjr in https://github.com/langchain-ai/langchain/pull/10960
• Fix web-base loader by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11135
• Updated LocalAIEmbeddings docstring to better explain why openai by @jamesbraza in https://github.com/langchain-ai/langchain/pull/10946
• Add support for project metadata in run_on_dataset by @hinthornw in https://github.com/langchain-ai/langchain/pull/11200
• Add from_embeddings for opensearch by @hinthornw in https://github.com/langchain-ai/langchain/pull/10957
• Implement better reprs for Runnables by @nfcampos in https://github.com/langchain-ai/langchain/pull/11175
• Enable creating Tools from any Runnable by @nfcampos in https://github.com/langchain-ai/langchain/pull/11177
• Clean warnings: replace type with isinstance and fix syntax by @gkorland in https://github.com/langchain-ai/langchain/pull/11219
• Add RunnableGenerator by @nfcampos in https://github.com/langchain-ai/langchain/pull/11214
• Update fireworks features by @ZixinYang in https://github.com/langchain-ai/langchain/pull/11205
• mongodb doc loader init by @saginawj in https://github.com/langchain-ai/langchain/pull/10645
• Suppress warnings in interactive env that stem from tab completion by @eyurtsev in https://github.com/langchain-ai/langchain/pull/11190
• OpenAI gpt-3.5-turbo-instruct cost information by @attila-tokes in https://github.com/langchain-ai/langchain/pull/11218
• Fix typo in gradient.ipynb by @eltociear in https://github.com/langchain-ai/langchain/pull/11206
• bump 305 by @baskaryan in https://github.com/langchain-ai/langchain/pull/11224

New Contributors

• @linancn made their first contribution in https://github.com/langchain-ai/langchain/pull/11145
• @akionux made their first contribution in https://github.com/langchain-ai/langchain/pull/11109
• @mani2348 made their first contribution in https://github.com/langchain-ai/langchain/pull/11161
• @ATelders made their first contribution in https://github.com/langchain-ai/langchain/pull/11183
• @jplock made their first contribution in https://github.com/langchain-ai/langchain/pull/11115
• @NoahStapp made their first contribution in https://github.com/langchain-ai/langchain/pull/11139
• @jeffkayne made their first contribution in https://github.com/langchain-ai/langchain/pull/11059
• @kennethchoe made their first contribution in https://github.com/langchain-ai/langchain/pull/11050
• @fynnfluegge made their first contribution in https://github.com/langchain-ai/langchain/pull/11160
• @dremeika made their first contribution in https://github.com/langchain-ai/langchain/pull/11023
• @paperMoose made their first contribution in https://github.com/langchain-ai/langchain/pull/9472
• @swimninja247 made their first contribution in https://github.com/langchain-ai/langchain/pull/11020
• @ClementSicard made their first contribution in https://github.com/langchain-ai/langchain/pull/11038
• @tarrade made their first contribution in https://github.com/langchain-ai/langchain/pull/11006
• @jreinjr made their first contribution in https://github.com/langchain-ai/langchain/pull/10960
• @jamesbraza made their first contribution in https://github.com/langchain-ai/langchain/pull/10946
• @attila-tokes made their first contribution in https://github.com/langchain-ai/langchain/pull/11218

Full Changelog: https://github.com/langchain-ai/langchain/compare/v0.0.304...v0.0.305