v0.4.28

llamaindex can now ingest image data natively! 🖼️

• 📄Add a native image Document format
• 🙋Query these images with text-based queries!
• 📚Get image sources in the results

other updates:

• prevent duplicate embeddings when traversing a tree (thanks kaiser)
• fix db reader
• fixed a bug with file metadata in SimpleDirectoryReader.load_data (thanks andrei)