V0.0.62

Version 0.0.62

This new version includes a significant refactor of the querybot's faux chat history construction for improved clarity and functionality.

The faux chat history construction in querybot has been updated for better clarity and functionality. The VectorIndexRetriever has been replaced with the index.as_retriever method, a system message has been added to the faux chat history, the last four responses from the chat history are now included in the faux chat history, and the order of faux chat history construction has been adjusted for better clarity (47a35d) (Eric Ma)