↕️ You can now maximize charts and images!
⚡ Streamlit is now much faster when writing data in quick succession to your app.
✳️ Ability to blacklist folder globs from "run on save" and @st.cache hashing.
🎛️ Improved handling of widget state when Python file is modified.
🙈 Improved HTML support in st.write and st.markdown. HTML is still unsafe, though!
Notable bug fixes:
Fixes @st.cache bug related to having your Python environment on current
  working directory. Issue #242
Fixes loading of root url / on Windows. Issue #244
Version 0.47.0
Release date: October 1, 2019
Highlights:
🌄 New hello.py showing off 4 glorious Streamlit apps. Try it out!
🔄 Streamlit now automatically selects an unused port when 8501 is already in use.
🎁 Sidebar support is now out of beta! Just start any command with st.sidebar. instead of st.
