Llama-index-g

New Features
- Added support for FalkorDB/RedisGraph graph store (7346)
- Added directed sub-graph RAG (7378)
- Added support for `BM25Retriever` (7342)

Bug Fixes / Nits
- Added `max_tokens` to `Xinference` LLM (7372)
- Support cache dir creation in multithreaded apps (7365)
- Ensure temperature is a float for openai (7382)
- Remove duplicate subjects in knowledge graph retriever (7378)
- Added support for both pydantic v1 and v2 to allow other apps to move forward (7394)

Breaking/Deprecated API Changes
- Refactor prompt template (7319)
- Use `BasePromptTemplate` for generic typing
- Use `PromptTemplate`, `ChatPromptTemplate`, `SelectorPromptTemplate` as core implementations
- Use `LangchainPromptTemplate` for compatibility with Langchain prompt templates
- Fully replace specific prompt classes (e.g. `SummaryPrompt`) with generic `BasePromptTemplate` for typing in codebase.
- Keep `Prompt` as an alias for `PromptTemplate` for backwards compatibility.
- BREAKING CHANGE: remove support for `Prompt.from_langchain_prompt`, please use `template=LangchainPromptTemplate(lc_template)` instead.

New Features
- `OpenAIFineTuningHandler` for collecting LLM inputs/outputs for OpenAI fine tuning (7367)

Bug Fixes / Nits
- Add support for `claude-instant-1.2` (7369)

New Features
- Support fine-tuned OpenAI models (7364)
- Added support for Cassandra vector store (6784)
- Support pydantic fields in tool functions (7348)

Bug Fixes / Nits
- Fix inifinite looping with forced function call in `OpenAIAgent` (7363)

New Features
- auto vs. recursive retriever notebook (7353)
- Reader and Vector Store for BagelDB with example notebooks (7311)

Bug Fixes / Nits
- Use service context for intermediate index in retry source query engine (7341)
- temp fix for prompt helper + chat models (7350)
- Properly skip unit-tests when packages not installed (7351)

New Features
- Added FireStore docstore/index store support (7305)
- add recursive agent notebook (7330)

Bug Fixes / Nits
- Fix Azure pydantic error (7329)
- fix callback trace ids (make them a context var) (7331)

New Features
- Awadb Vector Store (7291)

Bug Fixes / Nits
- Fix bug in OpenAI llm temperature type