Reduce parameter surface of makeUrtextDaystamp (#738)

## Summary

makeUrtextDaystamp does not need all of Goal, just its deadline

Author: krugerk

BeeKit/Daystamp.swift

@@ -144,10 +144,10 @@ public struct Daystamp: CustomStringConvertible, Strideable, Comparable, Equatab
   /// generates the daystamp as a string for use in urtext, considering both the submission date and goal's deadline
   /// - Parameters:
   ///   - submissionDate: calendar date on which the datapoint would be submitted
-  ///   - goal: the goal for which the urtext is to be created
+  ///   - deadline: the goal's deadline
   /// - Returns: string of the daystamp, suitable for use in urtext
-  public static func makeUrtextDaystamp(submissionDate: Date = Date(), goal: Goal) -> String {
-    let daystamp = Daystamp(fromDate: submissionDate, deadline: goal.deadline)
+  public static func makeUrtextDaystamp(submissionDate: Date = Date(), deadline: Int) -> String {
+    let daystamp = Daystamp(fromDate: submissionDate, deadline: deadline)
     return String(format: "%04d %02d %02d", daystamp.year, daystamp.month, daystamp.day)
   }
 }

BeeSwift/GoalView/TimerViewController.swift

@@ -131,7 +131,7 @@ class TimerViewController: UIViewController {
     self.updateTimerLabel()
   }
   func urtext() -> String {
-    let urtextDaystamp = Daystamp.makeUrtextDaystamp(submissionDate: Date(), goal: goal)
+    let urtextDaystamp = Daystamp.makeUrtextDaystamp(submissionDate: Date(), deadline: goal.deadline)
     let value: Double
 
     switch self.units {