v0.9.0

Added

• pw.reducers.latest and pw.reducers.earliest that return the value with respectively maximal and minimal processing time assigned.
• pw.io.kafka.write can now produce messages containing raw bytes in case the table consists of a single binary column and raw mode is specified. Similarly, this method will provide plaintext messages if plaintext mode is chosen and the table consists of a single string-typed column.
• pw.io.pubsub.write connector for publishing Pathway tables into Google PubSub.
• Argument strict_prompt to answer_with_geometric_rag_strategy and answer_with_geometric_rag_strategy_from_index that allows optimizing prompts for smaller open-source LLM models.
• Temporarily switch LiteLLMChat's generation method to sync version due to a bug while using json mode with Ollama.

Changed

• BREAKING: pw.io.kafka.read will not parse the messages from UTF-8 in case raw mode was specified. To preserve this behavior you can use the plaintext mode.
• BREAKING: Table.flatten now flattens one column and spreads every other column of the table, instead of taking other columns from the argument list.