calculate time difference with now in flutter
Jiffy("2011-10-31", "yyyy-MM-dd").fromNow(); // 8 years ago
Jiffy("2012-06-20").fromNow(); // 7 years ago
var jiffy1 = Jiffy()
..startOf(Units.DAY);
jiffy1.fromNow(); // 19 hours ago
var jiffy2 = Jiffy()
..endOf(Units.DAY);
jiffy2.fromNow(); // in 5 hours
var jiffy3 = Jiffy()
..startOf(Units.HOUR);
jiffy3.fromNow();