Release langchain-community==0.2.1

community[patch]: Release. 0.2.1 (#22073)
community[patch]: Update the default “API URL” and “MODEL” of sparkllm (#22070)
community[minor]: Added propagation of document metadata from O365BaseLoader (#20663)
community[patch]: Update doc-string in CloudBlobLoader (#22069)
community[minor]: Add CloudBlobLoader that supports loading data from cloud buckets (#21957)
community[minor]: Add Cassandra ByteStore (#22064)
community[minor]: Add async methods to CassandraChatMessageHistory (#21975)
community[patch]: surrealdb provide functions for MMR (Maximal Marginal Relevance) (#21185)
community[patch]: Adding HEADER to the list of supported locations (#21946)
infra: rm unused # noqa violations (#22049)
community[minor]: Add Clova Embeddings for LangChain Community (#21890)
community[patch]: sharepoint loader identity enabled (#21176)
community[patch]: Update tongyi.py to support MultimodalConversation in dashscope. (#21249)
community[patch]: standardize init args, update for javelin sdk release. (#21980)
community[patch]: AzureSearchVectorStoreRetriever Fixed to account for search_kwargs (#21572)
community[patch]: add args_schema to WikipediaQueryRun (#22019)
community[minor]: Add Scrapfly Loader community integration (#22036)
langchain, community: move OpenAIAssistantV2Runnable to community (#22044)
community[patch]: update for compatibility with Meilisearch v1.8 (#21979)
community[patch]: Extend AzureSearch with maximal_marginal_relevance, from_embeddings (#21065)
community[patch]: Performant filter columns option for Hanavector (#21971)
langchain: add RankLLM Reranker (#21171)
community: Fix CSVLoader columns is None (#20701)
community[minor]: allow enabling proxy in aiohttp session in AsyncHTML (#19499)
community[patch]: Fix remaining inits in community (#22037)
community[patch]: Add unit test to verify that init is correctly defined (#22030)
community[patch]: fix public interface for embeddings module (#21650)
community[patch]: Clean up logic in import checking unit test (#22026)
community[patch]: Handle exceptions where node props aren't consistent in neo4j schema (#22027)
community[patch]: Fix ChatDatabricsk in case that streaming response doesn't have role field in delta chunk (#21897)
community[patch]: Add unit test to catch bad all definitions (#21996)
community[patch]: raise_for_status logic missing in async _fetch of WebBaseLoader (#21948)
community[patch]: Update model client to support vision model in Tong… (#21474)
community[patch]: update OctoAIEmbeddings to subclass OpenAIEmbeddings (#21805)
community[patch]: AzureSearch dont overwrite default async (#21989)
community[patch]: Fix typo in arxiv tool's doc (#21970)
community[minor]: add AskNews retriever and AskNews tool (#21581)
community[minor]: add aerospike vectorstore integration (#21735)
community[patch]: Fix MLX LLM Stream (#20575)
community[patch]: Remove redundant pebblo cloud api call (#21589)
community[patch]: standardized sparkllm init args (#21633)
community[patch]: Update UpTrain Callback Handler to support the new UpTrain evaluation schema (#21656)
openai[patch], community[patch]: add pricing and max context window for GPT-4o (#21673)
community: enable SupabaseVectorStore to support extended table fields (#21762)
community[patch]: fixed aleph alpha default emedding request (#21826)
community[patch]: Sambanova integration api update (#21848)
community[patch]: Adopting the lighter-weight xinference_client (#21900)
community[patch]: update apify integration to attribute API activity to langchain (#21909)
community[patch]: Better error message for neo4j vector when text is null (#21861)
doc list not empty (#21208)
community[patch]: Update documentation string in databricks chat model (#21915)