FB Prophet install reference: https://facebook.github.io/prophet/docs/installation.html#installation-in-python
import stan vs import pystan: facebook/prophet#401 (comment)
Pystan changes on version 3: https://pystan.readthedocs.io/en/latest/upgrading.html
Potential memory issues: facebook/prophet#1775 (comment)
Final App: https://share.streamlit.io/maansiii/stocks/main/stock_app.py