Langchain

What's Changed
* Ensure release command runs in a release branch by nfcampos in https://github.com/hwchase17/langchainjs/pull/647
* Update guide-chat.mdx by paddingme in https://github.com/hwchase17/langchainjs/pull/648
* fix: typo by chewam in https://github.com/hwchase17/langchainjs/pull/649
* docs: adds ecosystem docs for `UnstructuredLoader` by MthwRobinson in https://github.com/hwchase17/langchainjs/pull/653
* Update url in UnstructuredLoader example by awalker4 in https://github.com/hwchase17/langchainjs/pull/650
* Add missing cache entrypoint by nfcampos in https://github.com/hwchase17/langchainjs/pull/664
* Remove instanceof checks to support deno on supabase by nfcampos in https://github.com/hwchase17/langchainjs/pull/667

New Contributors
* ezg made their first contribution in https://github.com/hwchase17/langchainjs/pull/614
* ChhikaraBRUH made their first contribution in https://github.com/hwchase17/langchainjs/pull/637
* ZYJLiu made their first contribution in https://github.com/hwchase17/langchainjs/pull/620
* paddingme made their first contribution in https://github.com/hwchase17/langchainjs/pull/648
* chewam made their first contribution in https://github.com/hwchase17/langchainjs/pull/649
* awalker4 made their first contribution in https://github.com/hwchase17/langchainjs/pull/650

**Full Changelog**: https://github.com/hwchase17/langchainjs/compare/0.0.49...0.0.50

* Add MetalRetriever (613) (047691f)
* Remove double assignment (642) (eaa7e78)
* Update replicate to version using fetch, which works outside of node (641) (ba4a776)
* fix: add this.stop = input.stop to LLMSingleActionAgent constructor (620) (2feb3b5)
* Add chains to test-exports (639) (813e99a)
* Better prettier output in CI (638) (72dfe6c)
* Merge pull request 626 from hwchase17/nc/cjs-build (d221617)
* Merge pull request 637 from ChhikaraBRUH/main (a5eeaff)
* adding Supabase default assumptions (6a3b21f)
* Update example import path (010fd18)
* Update docs (1eea9e2)
* Handle zapier errors (627) (22e2b73)
* Only unit tests (08084ca)
* Ensure all test scripts run in CI (90a774f)
* Merge pull request 630 from hwchase17/nc/process-env-guard (7d7e79c)
* Fix side effect (625475f)
* Add a guard on usage of process.env (4af2974)
* Merge pull request 622 from hwchase17/nc/custom-pdfjs (5e6f8dc)
* Allow passing a custom pdfjs build (432567b)

What's Changed
* ChatPromptTemplate: Update doc-strings, update from_role_strings behavior by eyurtsev in https://github.com/langchain-ai/langchain/pull/8308
* Fix "missing key op" RDFGraph OWL serialization by Caitlin2694 in https://github.com/langchain-ai/langchain/pull/8276
* Fixes 8310 Fix maximum recursion depth exceeded error by bharat-p in https://github.com/langchain-ai/langchain/pull/8313
* Nc/protocol by nfcampos in https://github.com/langchain-ai/langchain/pull/7800
* Add api cross ref linking by hinthornw in https://github.com/langchain-ai/langchain/pull/8275
* Avoid re-computation of embedding in weaviate similarity search by rohitgr7 in https://github.com/langchain-ai/langchain/pull/8284
* update api ref style by baskaryan in https://github.com/langchain-ai/langchain/pull/8318
* docstrings cleanup by leo-gan in https://github.com/langchain-ai/langchain/pull/8311
* feat(confluence): add markdown format option by BastinFlorian in https://github.com/langchain-ai/langchain/pull/8246
* Added async support to PlanAndExecute Chain by daniel-brenot in https://github.com/langchain-ai/langchain/pull/8239
* Implement async support for Cohere by kacperlukawski in https://github.com/langchain-ai/langchain/pull/8237
* removed namespace title by leo-gan in https://github.com/langchain-ai/langchain/pull/8208
* Azure Cognitive Search: Custom index and scoring profile support by ruoccofabrizio in https://github.com/langchain-ai/langchain/pull/6843
* Optimize the cosine_similarity_top_k function performance by misrasaurabh1 in https://github.com/langchain-ai/langchain/pull/8151
* Delete Old Evals Examples by hinthornw in https://github.com/langchain-ai/langchain/pull/8252
* Fix notebook that 'cannot convert' via nbdoc_build by hinthornw in https://github.com/langchain-ai/langchain/pull/8333
* Tree of Thought introducing a new ToTChain. by vadimgu in https://github.com/langchain-ai/langchain/pull/5167
* bump experimental to 005 by hwchase17 in https://github.com/langchain-ai/langchain/pull/8339

New Contributors
* Caitlin2694 made their first contribution in https://github.com/langchain-ai/langchain/pull/8276
* bharat-p made their first contribution in https://github.com/langchain-ai/langchain/pull/8313
* rohitgr7 made their first contribution in https://github.com/langchain-ai/langchain/pull/8284
* BastinFlorian made their first contribution in https://github.com/langchain-ai/langchain/pull/8246
* daniel-brenot made their first contribution in https://github.com/langchain-ai/langchain/pull/8239
* vadimgu made their first contribution in https://github.com/langchain-ai/langchain/pull/5167

**Full Changelog**: https://github.com/langchain-ai/langchain/compare/v0.0.244...v0.0.5