What's New in 1.5.0

Added utility functions to retrieve metadata about existing vector and full-text indexes.
Added support for the effective_search_ratio parameter in vector and hybrid searches, allowing finer control over query accuracy by adjusting the candidate pool size in similarity searches.
Introduced the upsert_vectors utility function for batch upserting embeddings into vector indexes on both nodes and relationships.
Introduced the extract_cypher function to improve the extraction of LLM-generated Cypher queries in Text2CypherRetriever.
Added Neo4jMessageHistory for saving LLM chat message history to a Neo4j database.
Added InMemoryMessageHistory for storing LLM chat message history in memory.
Added example scripts and documentation for using the new message history classes.
Updated LLM and GraphRAG classes to support message history functionality.

Changed in 1.5.0

Added deprecation warnings to upsert_vector and upsert_vector_on_relationship, recommending migration to upsert_vectors.
Added deprecation warnings to async_upsert_vector and async_upsert_vector_on_relationship, notifying developers of their planned removal in a future release.
Added support for database, timeout, and sanitize arguments in schema retrieval functions. The sanitize option allows for the removal of large properties such as embeddings.

Fixed an issue where a node alias was incorrectly hardcoded in the _handle_field_filter function.