pandas on covid19 data from https://github.com/CSSEGISandData/COVID-19/blob/master/csse_covid_19_data/csse_covid_19_time_series/time_series_19-covid-Confirmed.csv
dl the latest with curl, e.g.
curl https://raw.githubusercontent.com/CSSEGISandData/COVID-19//master/csse_covid_19_data/csse_covid_19_time_series/time_series_19-covid-Confirmed.csv --output covid.csv
