What's Changed

• Docker support added by @TesAnti in https://github.com/tryAGI/LangChain/pull/66
• ConversationBufferMemory added together with chains that can use it and demo test by @TesAnti in https://github.com/tryAGI/LangChain/pull/67
• added audio chains by @TesAnti in https://github.com/tryAGI/LangChain/pull/69
• added caching to chains that using models by @TesAnti in https://github.com/tryAGI/LangChain/pull/72
• MapReduceChain and ReduceChain by @khoroshevj in https://github.com/tryAGI/LangChain/pull/77
• MarkdownHeaderTextSplitter, SQLite vector store by @TesAnti in https://github.com/tryAGI/LangChain/pull/79
• SqlDatabaseChain with Postgres implementation by @khoroshevj in https://github.com/tryAGI/LangChain/pull/83
• ConversationalRetrievalChain by @khoroshevj in https://github.com/tryAGI/LangChain/pull/85
• Redis message history by @khoroshevj in https://github.com/tryAGI/LangChain/pull/86
• duckduckgo search and websearch retriever by @khoroshevj in https://github.com/tryAGI/LangChain/pull/87
• postgres vector store (pgvector extension) by @khoroshevj in https://github.com/tryAGI/LangChain/pull/88
• feat: Google Gemini by @gunpal5 in https://github.com/tryAGI/LangChain/pull/90
• Agents by @TesAnti in https://github.com/tryAGI/LangChain/pull/92
• Added support for Azure OpenAI provider by @kharedev247 in https://github.com/tryAGI/LangChain/pull/93
• Ollama provider by @TesAnti in https://github.com/tryAGI/LangChain/pull/95
• Stable diffusion support by @TesAnti in https://github.com/tryAGI/LangChain/pull/96
• image generation small fix to match results of AUTOMATIC1111 UI by @TesAnti in https://github.com/tryAGI/LangChain/pull/97
• Hook for chain execution tracing by @TesAnti in https://github.com/tryAGI/LangChain/pull/98
• Add Azure Embeddings Model Interface implementation by @IRooc in https://github.com/tryAGI/LangChain/pull/116
• Azure Image Dall-e-3 setup by @IRooc in https://github.com/tryAGI/LangChain/pull/118
• Preparations for code-execution agents by @TesAnti in https://github.com/tryAGI/LangChain/pull/120
• feat: added file-based history by @hiptopjones in https://github.com/tryAGI/LangChain/pull/121
• Simplified SQLite vector store creation by @TesAnti in https://github.com/tryAGI/LangChain/pull/123
• added hook for chain links by @TesAnti in https://github.com/tryAGI/LangChain/pull/125
• feat: added AWS Bedrock provider and tests. by @curlyfro in https://github.com/tryAGI/LangChain/pull/129
• feat: add additional memory classes and do some cleanup by @hiptopjones in https://github.com/tryAGI/LangChain/pull/132
• Unified agents tool by @TesAnti in https://github.com/tryAGI/LangChain/pull/134
• Resolves #135 - Adds propers async/await to LLMChain ParseResult by @ericgreenmix in https://github.com/tryAGI/LangChain/pull/136
• Google search tool and cleanup by @TesAnti in https://github.com/tryAGI/LangChain/pull/138
• feat: added more Amazon Bedrock models and added SageMaker project by @curlyfro in https://github.com/tryAGI/LangChain/pull/141
• feat: Refactor providers by @HavenDV in https://github.com/tryAGI/LangChain/pull/131
• added ability to serve user chains though api by @TesAnti in https://github.com/tryAGI/LangChain/pull/145
• Serve example by @TesAnti in https://github.com/tryAGI/LangChain/pull/146
• Updated Amazon Bedrock models. by @curlyfro in https://github.com/tryAGI/LangChain/pull/147
• fix: handful of bugs in OpenAI image generation by @hiptopjones in https://github.com/tryAGI/LangChain/pull/148
• fix: updates to Serve project and example by @hiptopjones in https://github.com/tryAGI/LangChain/pull/151
• fix: Bugfix Cohere streaming stop_reason by @curlyfro in https://github.com/tryAGI/LangChain/pull/150
• feat: Added ImageToText abstractions and HuggingFace implementation. by @curlyfro in https://github.com/tryAGI/LangChain/pull/152
• fix: SageMaker customizable inputs and responses by @curlyfro in https://github.com/tryAGI/LangChain/pull/154
• fix: Fixed warnings from latest commit. by @curlyfro in https://github.com/tryAGI/LangChain/pull/155
• feat: Added OpenAI Whisper STT provider using Whisper.Net library by @Lyx52 in https://github.com/tryAGI/LangChain/pull/153
• Fixed the MarkdownHeaderTextSplitter and it's test to match closer to the original implementation by @TesAnti in https://github.com/tryAGI/LangChain/pull/157
• small fixes to pdf source and sqlite provider by @TesAnti in https://github.com/tryAGI/LangChain/pull/158
• feat: Added Claude3 and Mistral models for AWS Bedrock by @curlyfro in https://github.com/tryAGI/LangChain/pull/159
• feat: added Bedrock Claude3 model request image and streaming support by @curlyfro in https://github.com/tryAGI/LangChain/pull/160
• Update usage example in readme.md by @TesAnti in https://github.com/tryAGI/LangChain/pull/161

New Contributors

• @allcontributors made their first contribution in https://github.com/tryAGI/LangChain/pull/60
• @gunpal5 made their first contribution in https://github.com/tryAGI/LangChain/pull/90
• @kharedev247 made their first contribution in https://github.com/tryAGI/LangChain/pull/93
• @IRooc made their first contribution in https://github.com/tryAGI/LangChain/pull/116
• @hiptopjones made their first contribution in https://github.com/tryAGI/LangChain/pull/121
• @curlyfro made their first contribution in https://github.com/tryAGI/LangChain/pull/129
• @ericgreenmix made their first contribution in https://github.com/tryAGI/LangChain/pull/136
• @HavenDV made their first contribution in https://github.com/tryAGI/LangChain/pull/131
• @Lyx52 made their first contribution in https://github.com/tryAGI/LangChain/pull/153

Full Changelog: https://github.com/tryAGI/LangChain/compare/v0.12.2...v0.13.0