 
 // Required for backwards compatibility with Objective-C.
 public extension NSDate {
-	public func drp_addCalendarUnits(_ count: Int, unit: NSCalendar.Unit, calendar: Calendar = Calendar.current) -> NSDate? {
+	func drp_addCalendarUnits(_ count: Int, unit: NSCalendar.Unit, calendar: Calendar = Calendar.current) -> NSDate? {
 		return (self as Date).drp_addCalendarUnits(count, unit: unit, calendar: calendar) as NSDate?
 	}
 	
-	public func drp_beginning(ofCalendarUnit unit: NSCalendar.Unit, calendar: Calendar = Calendar.current) -> NSDate? {
+	func drp_beginning(ofCalendarUnit unit: NSCalendar.Unit, calendar: Calendar = Calendar.current) -> NSDate? {
 		return (self as Date).drp_beginning(ofCalendarUnit: unit, calendar: calendar) as NSDate?
 	}
 	
-	public func drp_end(ofCalendarUnit unit: NSCalendar.Unit, calendar: Calendar = Calendar.current) -> NSDate? {
+	func drp_end(ofCalendarUnit unit: NSCalendar.Unit, calendar: Calendar = Calendar.current) -> NSDate? {
 		return (self as Date).drp_end(ofCalendarUnit: unit, calendar: calendar) as NSDate?
 	}
 	
-	public func drp_calendarUnits(since: NSDate, unit: NSCalendar.Unit, calendar: Calendar = Calendar.current) -> Int? {
+	func drp_calendarUnits(since: NSDate, unit: NSCalendar.Unit, calendar: Calendar = Calendar.current) -> Int? {
 		return (self as Date).drp_calendarUnits(since: since as Date, unit: unit, calendar: calendar)
 	}
 	
 	// Returns the number of calendar days between the argument and the receiver.
-	public func drp_daysSince(_ since: NSDate, calendar: Calendar = Calendar.current) -> Int? {
+	func drp_daysSince(_ since: NSDate, calendar: Calendar = Calendar.current) -> Int? {
 		return (self as Date).drp_daysSince(since as Date, calendar: calendar)
 	}
 }

			.drp_adding(1, component: component, calendar: calendar)
	}
	
	public func drp_components(_ component: Calendar.Component, since startDate: Date, calendar: Calendar = Calendar.current) -> Int? {
		guard let fromDate = startDate.drp_beginning(of: component, calendar: calendar),
			let toDate = self.drp_beginning(of: component, calendar: calendar) else { return nil }
		return calendar.dateComponents(Set(arrayLiteral: component), from: fromDate, to: toDate)

		}
	}
	
	func drp_beginning(of component: Calendar.Component, hourShift: Int, calendar: Calendar = Calendar.current) -> Date? {
		if !component.isAffectedByHourShift {
			return self.drp_beginning(of: component, calendar: calendar)
		}
