What's Changed
* experimental[patch]: Release 0.0.45 by baskaryan in https://github.com/langchain-ai/langchain/pull/14418
* docs: notebook linting by leo-gan in https://github.com/langchain-ai/langchain/pull/14366
* docs `promptlayer` pages update by leo-gan in https://github.com/langchain-ai/langchain/pull/14416
* fix imports from core by hwchase17 in https://github.com/langchain-ai/langchain/pull/14430
* Fix scheduled testing by efriis in https://github.com/langchain-ai/langchain/pull/14428
* langchain[patch]: fix scheduled testing ci variables by efriis in https://github.com/langchain-ai/langchain/pull/14459
* revoke serialization by hwchase17 in https://github.com/langchain-ai/langchain/pull/14456
* langchain[patch]: fix scheduled testing ci dep install by efriis in https://github.com/langchain-ai/langchain/pull/14460
* langchain[patch]: xfail unstable vertex test by efriis in https://github.com/langchain-ai/langchain/pull/14462
* Use deepcopy in RunLogPatch by eyurtsev in https://github.com/langchain-ai/langchain/pull/14244
* docs `Dependents` updated statistics by leo-gan in https://github.com/langchain-ai/langchain/pull/14461
* core[patch], langchain[patch], experimental[patch]: import CI by efriis in https://github.com/langchain-ai/langchain/pull/14414
* Update mongodb_atlas docs for GA by baf509 in https://github.com/langchain-ai/langchain/pull/14425
* infra: add langchain-community release workflow by baskaryan in https://github.com/langchain-ai/langchain/pull/14469
* docs `networkx`update by leo-gan in https://github.com/langchain-ai/langchain/pull/14426
* SmartLLMChain Output Key Customization by anishnag in https://github.com/langchain-ai/langchain/pull/14466
New Contributors
* baf509 made their first contribution in https://github.com/langchain-ai/langchain/pull/14425
* anishnag made their first contribution in https://github.com/langchain-ai/langchain/pull/14466
**Full Changelog**: https://github.com/langchain-ai/langchain/compare/v0.0.348...v0.0.349-rc.1