Notable Changes
Widget labels can contain inline Markdown. See our docs and demo app for more info.
st.audio now supports playing audio data passed in as NumPy arrays with the keyword-only sample_rate parameter.
Functions cached with st.experimental_memo or st.experimental_singleton can contain Streamlit widgets using the experimental_allow_widgets parameter. This allows caching checkboxes, sliders, radio buttons, and more!Other Changes
As a musician and audio engineer (in my spare time) I love this update for st.audio 
This release seems to have broken the Streamlit Altair theme for charting (this link used to show a demo but that seems down now too: https://share.streamlit.io/app/streamlit-feature-demos-altairstreamlitstreamlit-app-260ynr/)
At least, the pattern for applying the Streamlit theme has changed - you can still specify it on a chart by chart basis but that global command seems to no longer work.
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Design tweak to prevent jittering in sliders (
Bug fix: links in headers are red, not blue (
Bug fix: properly resize Plotly charts when exiting fullscreen (
: Bug fix: don’t accidentally trigger