v0.0.51

What's Changed

• Fix regenerate in chat playground for legacy inputs by @jacoblee93 in https://github.com/langchain-ai/langserve/pull/529
• Release 0.0.51 by @jacoblee93 in https://github.com/langchain-ai/langserve/pull/530

Full Changelog: https://github.com/langchain-ai/langserve/compare/v0.0.50...v0.0.51