What's Changed
* Update API Handler marking some fields as private by eyurtsev in https://github.com/langchain-ai/langserve/pull/329
* Update feedback enabled endpoint by eyurtsev in https://github.com/langchain-ai/langserve/pull/332
* Expose API Handler by eyurtsev in https://github.com/langchain-ai/langserve/pull/333
* Clean up endpoints by eyurtsev in https://github.com/langchain-ai/langserve/pull/338
* Update widgets example by eyurtsev in https://github.com/langchain-ai/langserve/pull/339
* Update README.md with chat widget information by eyurtsev in https://github.com/langchain-ai/langserve/pull/340
* Only run per request modifier for invoke,batch,stream,astream_log by eyurtsev in https://github.com/langchain-ai/langserve/pull/341
* Version 0.0.37 by eyurtsev in https://github.com/langchain-ai/langserve/pull/342
**Full Changelog**: https://github.com/langchain-ai/langserve/compare/v0.0.36...v0.0.37