Add HKUnit extension to get preferredMinimumFractionDigits

That extension to HKUnit comes from LoopKit, which is no longer
included with the Loop Status Extension. Not sure how this compiled
without this fix in the past.

Author: Bharat Mediratta

Loop Status Extension/HKUnit.swift

@@ -0,0 +1,22 @@
+//
+//  HKUnit.swift
+//  Loop
+//
+//  Created by Bharat Mediratta on 12/2/16.
+//  Copyright © 2016 LoopKit Authors. All rights reserved.
+//
+
+import HealthKit
+
+public extension HKUnit {
+    // A formatting helper for determining the preferred decimal style for a given unit
+    // This is similar to the LoopKit HKUnit extension, but copied here so that we can
+    // avoid a dependency on LoopKit from the Loop Status Extension.
+    var preferredMinimumFractionDigits: Int {
+        if self.unitString == "mg/dL" {
+            return 0
+        } else {
+            return 1
+        }
+    }
+}

Loop.xcodeproj/project.pbxproj

@@ -151,6 +151,8 @@
 		43FBEDD81D73843700B21F22 /* LevelMaskView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 43FBEDD71D73843700B21F22 /* LevelMaskView.swift */; };
 		4D3B40041D4A9E1A00BC6334 /* G4ShareSpy.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4D3B40021D4A9DFE00BC6334 /* G4ShareSpy.framework */; };
 		4D5B7A4B1D457CCA00796CA9 /* GlucoseG4.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4D5B7A4A1D457CCA00796CA9 /* GlucoseG4.swift */; };
+		4F526D5D1DF0FD6500A04910 /* InsulinKit.framework in CopyFiles */ = {isa = PBXBuildFile; fileRef = 43C6407B1DA051850093E25D /* InsulinKit.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		4F526D5F1DF2459000A04910 /* HKUnit.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4F526D5E1DF2459000A04910 /* HKUnit.swift */; };
 		4F70C1DE1DE8DCA7006380B7 /* NotificationCenter.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4F70C1DD1DE8DCA7006380B7 /* NotificationCenter.framework */; };
 		4F70C1E11DE8DCA7006380B7 /* StatusViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4F70C1E01DE8DCA7006380B7 /* StatusViewController.swift */; };
 		4F70C1E41DE8DCA7006380B7 /* MainInterface.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 4F70C1E21DE8DCA7006380B7 /* MainInterface.storyboard */; };
@@ -175,7 +177,6 @@
 		4F70C2131DE90339006380B7 /* StatusExtensionContext.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4F70C2111DE900EA006380B7 /* StatusExtensionContext.swift */; };
 		4FC8C8011DEB93E400A1452E /* NSUserDefaults+StatusExtension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4FC8C8001DEB93E400A1452E /* NSUserDefaults+StatusExtension.swift */; };
 		4FC8C8021DEB943800A1452E /* NSUserDefaults+StatusExtension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4FC8C8001DEB93E400A1452E /* NSUserDefaults+StatusExtension.swift */; };
-		4F526D5D1DF0FD6500A04910 /* InsulinKit.framework in CopyFiles */ = {isa = PBXBuildFile; fileRef = 43C6407B1DA051850093E25D /* InsulinKit.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		C10428971D17BAD400DD539A /* NightscoutUploadKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C10428961D17BAD400DD539A /* NightscoutUploadKit.framework */; };
 		C15713821DAC6983005BC4D2 /* MealBolusNightscoutTreatment.swift in Sources */ = {isa = PBXBuildFile; fileRef = C15713811DAC6983005BC4D2 /* MealBolusNightscoutTreatment.swift */; };
 		C17884631D51A7A400405663 /* BatteryIndicator.swift in Sources */ = {isa = PBXBuildFile; fileRef = C17884621D51A7A400405663 /* BatteryIndicator.swift */; };
@@ -433,6 +434,7 @@
 		43FBEDD71D73843700B21F22 /* LevelMaskView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = LevelMaskView.swift; sourceTree = "<group>"; };
 		4D3B40021D4A9DFE00BC6334 /* G4ShareSpy.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = G4ShareSpy.framework; path = Carthage/Build/iOS/G4ShareSpy.framework; sourceTree = "<group>"; };
 		4D5B7A4A1D457CCA00796CA9 /* GlucoseG4.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = GlucoseG4.swift; path = Loop/Models/GlucoseG4.swift; sourceTree = SOURCE_ROOT; };
+		4F526D5E1DF2459000A04910 /* HKUnit.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = HKUnit.swift; sourceTree = "<group>"; };
 		4F70C1DC1DE8DCA7006380B7 /* Loop Status Extension.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = "Loop Status Extension.appex"; sourceTree = BUILT_PRODUCTS_DIR; };
 		4F70C1DD1DE8DCA7006380B7 /* NotificationCenter.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = NotificationCenter.framework; path = System/Library/Frameworks/NotificationCenter.framework; sourceTree = SDKROOT; };
 		4F70C1E01DE8DCA7006380B7 /* StatusViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StatusViewController.swift; sourceTree = "<group>"; };
@@ -810,6 +812,7 @@
 				4F70C1E21DE8DCA7006380B7 /* MainInterface.storyboard */,
 				4F70C1E51DE8DCA7006380B7 /* Info.plist */,
 				4F70C2111DE900EA006380B7 /* StatusExtensionContext.swift */,
+				4F526D5E1DF2459000A04910 /* HKUnit.swift */,
 			);
 			path = "Loop Status Extension";
 			sourceTree = SOURCE_ROOT;
@@ -1299,6 +1302,7 @@
 			files = (
 				4FC8C8021DEB943800A1452E /* NSUserDefaults+StatusExtension.swift in Sources */,
 				4F70C20B1DE8E9F4006380B7 /* GlucoseTrend.swift in Sources */,
+				4F526D5F1DF2459000A04910 /* HKUnit.swift in Sources */,
 				4F70C1FB1DE8E45E006380B7 /* NSTimeInterval.swift in Sources */,
 				4F70C1FA1DE8E42D006380B7 /* ReservoirVolumeHUDView.swift in Sources */,
 				4F70C1F91DE8E409006380B7 /* LoopStateView.swift in Sources */,