description: st.add_rows appends a dataframe to the bottom of the current one in certain elements, for optimized data updates.
Mutate charts
Sometimes you display a chart or dataframe and want to modify live as the app
runs (for example, in a loop). Depending on what you're looking for, there are 3 different ways to
do this:
Using st.empty to replace a single element.
Using st.container or
   st.columns to replace multiple elements.
Using add_rows to append data to specific types of elements.
Here we discuss that last case.
