v0.2.0 New UI release; support customized documents retrieval

Support retrieving information from customized documents

• Add VectorRM to support grounding on user-provided documents, complementing existing support of search engines (YouRM, BingSearch). (#58)
• We provide an example script here and detailed instructions here.

UI updates

• We release a new UI for users to directly interact with STORM, available at https://storm.genie.stanford.edu/. This update brings improved stability and a new feature of discovering popular topics. (Thanks dekunma from Yale for the collaboration)
• We release demo light for developers, a minimal user interface built with streamlit framework in Python, handy for local development and demo hosting (#54)

Miscs

• In-person talk in San Francisco: Our team member will give an invited talk at Wikipedians Meetup @ San Francisco on July 11. Come to chat with us in person!
• Upcoming major update: A major update supporting human-AI collaboration mode will be released over the summer. Stay tuned!