Llama-index-g

New Features
- add embedding adapter fine-tuning engine + guide (7565)
- Added support for Azure Cognitive Search vector store (7469)
- Support delete in supabase (6951)
- Added support for Espilla vector store (7539)
- Added support for AnyScale LLM (7497)

Bug Fixes / Nits
- Default to user-configurable top-k in `VectorIndexAutoRetriever` (7556)
- Catch validation errors for structured responses (7523)
- Fix streaming refine template (7561)

New Features
- Added Portkey LLM integration (7508)
- Support postgres/pgvector hybrid search (7501)
- upgrade recursive retriever node reference notebook (7537)

New Features
- replace list index with summary index (7478)
- rename list index to summary index part 2 (7531)

New Features
- add agent finetuning guide (7526)

New Features
- Make (some) loaders serializable (7498)
- add node references to recursive retrieval (7522)

Bug Fixes / Nits
- Raise informative error when metadata is too large during splitting (7513)
- Allow langchain splitter in simple node parser (7517)

Bug Fixes / Nits
- fix link to Marvin notebook in docs (7504)
- Ensure metadata is not `None` in `SimpleWebPageReader` (7499)
- Fixed KGIndex visualization (7493)
- Improved empty response in KG Index (7493)