Function covid19db::dateutil::dateutc_to_nd

pub fn dateutc_to_nd(dateutc: &Date<Utc>) -> NaiveDate

Convert a Date<Utc> to a NaiveDate

use covid19db::dateutil::*;
use chrono::prelude::*;

assert_eq!(dateutc_to_nd(&Utc.ymd(2015, 3, 14)), NaiveDate::from_ymd(2015, 3, 14));