isInRange ignores granularity parameter when used with plain Date

[malcommac]

Using plain Date objects isInRange function ignores granularity parameters and always pass nanoseconds. This ends in a wrong result comparing dates.
For example the following check return false even if the passed granularity is day and both dates are in the same day.

let startTime = Date(timeIntervalSince1970: 1538344800.0) // 2018-09-30 22:00:00 +0000
let endTime = Date(timeIntervalSince1970: 1540940400.0 + (60 * 60 * 3)) // 2018-10-31 02:00:00 +0000
let checkStart = Date(timeIntervalSince1970: 1540976400.0) // 2018-10-31 09:00:00 +0000
let checkLast = Date(timeIntervalSince1970: 1540978200.0) // 2018-10-31 09:30:00 +0000
		
let isInside = checkStart.isInRange(date: startTime, and: endTime, orEqual: true, granularity: .day) // should return false even if its true