Release Release 0.3.21 · langchain-ai/langchainjs

What's Changed

Release 0.3.20 by @jacoblee93 in #7958
fix(openai): ensure that we're not sending stream: true even if streaming is not being done by @dqbd in #7959
release(openai): 0.5.3 by @dqbd in #7965
fix(openai): handle system, developer messages by @dqbd in #7966
release(openai): 0.5.4 by @dqbd in #7967
fix(docs): fix a typo by @tperelle in #7962
docs: expand descriptions in llms.txt by @eyurtsev in #7971
fix(ci): Remove unused debug action by @jacoblee93 in #7976
docs: fix typo in structured output guide by @zdpk in #7964
docs: reflect changes in SQL QA prompt by @ccurme in #7985
chore(docs): update banner to point at JS job listing by @benjamincburns in #7988
feat: allow defining LangChain-style tools with JSONSchema by @benjamincburns in #7973
release(core): 0.3.44 by @benjamincburns in #7989
release(anthropic): 0.3.17 by @benjamincburns in #7990
release(openai): 0.5.5 by @benjamincburns in #7991
release(aws): 0.1.8 by @benjamincburns in #7992
release(cohere): 0.3.3 by @benjamincburns in #7993
release(google) by @benjamincburns in #7994
release(community): 0.3.40 by @benjamincburns in #7995

Full Changelog: 0.3.20...0.3.21