Jerry Liu

a visual guide on how to use each index

Allow users to do `index.save` and `index.load` to/from Weaviate. Currently goes through each node individually to save/load. Open to feedback!

Query responses now return a Response object that contains the text response, as well as source nodes (containing the text chunk and underlying document id).

Add both `SimpleWebPageReader` and `TrafilaturaWebReader` classes. Also add an example notebook

Allows additional document metadata (either manually specified or automatically extracted) to be passed to each text chunk for higher-level context.

oops

Add MockEmbedding class. The user can now use this to predict embedding token usage before calling the actual embedding API. Can be used in tandem with MockLLMPredictor.