Add iOS 11 support

Package.swift

@@ -6,7 +6,7 @@ import PackageDescription
 let package = Package(
     name: "RealFlags",
     platforms: [
-        .iOS(.v13)
+        .iOS(.v11),
     ],
     products: [
         .library(name: "RealFlags", targets: ["RealFlags"]),

RealFlags/Sources/RealFlags/Classes/Browser/FlagsBrowserController.swift

@@ -297,7 +297,7 @@ public class FlagsBrowserController: UIViewController {
             case let collection as AnyFlagCollection:
                 return FlagBrowserItem(title: collection.name,
                                        subtitle: collection.description,
-                                       icon: UIImage(named: "datatype_list", in: .libraryBundle, with: nil),
+                                       icon: UIImage(named: "datatype_list", in: .libraryBundle, compatibleWith: nil),
                                        accessoryType: .disclosureIndicator,
                                        selectable: true,
                                        representedObj: collection)
@@ -484,19 +484,19 @@ extension AnyFlag {
         // Default data type icons
         switch dataType {
         case is String.Type:
-            return UIImage(named: "datatype_string", in: .libraryBundle, with: .none)
+            return UIImage(named: "datatype_string", in: .libraryBundle, compatibleWith: nil)
 
         case is Bool.Type:
-            return UIImage(named: "datatype_bool", in: .libraryBundle, with: .none)
+            return UIImage(named: "datatype_bool", in: .libraryBundle, compatibleWith: nil)
 
         case is Int.Type, is Int8.Type, is Int16.Type, is Int32.Type, is Int64.Type:
-            return UIImage(named: "datatype_number", in: .libraryBundle, with: .none)
+            return UIImage(named: "datatype_number", in: .libraryBundle, compatibleWith: nil)
 
         case is Double.Type:
-            return UIImage(named: "datatype_number", in: .libraryBundle, with: .none)
+            return UIImage(named: "datatype_number", in: .libraryBundle, compatibleWith: nil)
 
         case is JSONData.Type:
-            return UIImage(named: "datatype_json", in: .libraryBundle, with: .none)
+            return UIImage(named: "datatype_json", in: .libraryBundle, compatibleWith: nil)
 
         default:
             return nil

RealFlags/Sources/RealFlags/Classes/Providers/FlagsProvider.swift

@@ -10,7 +10,7 @@
 //  Licensed under MIT License.
 //
 
-#if !os(Linux)
+#if canImport(Combine)
 import Combine
 #endif
 
@@ -47,13 +47,14 @@ public protocol FlagsProvider {
     /// Reset the value for keypath; it will remove the value from the record of the flag provider.
     func resetValueForFlag(key: FlagKeyPath) throws
 
-    #if !os(Linux)
+    #if canImport(Combine)
     // Apple platform also support Combine framework to provide realtime notification of new events to any subscriber.
     // By default it does nothing (take a look to the default implementation in extension below).
 
     /// You can use this value to receive updates when keys did updated in sources.
     ///
     /// - Parameter keys: updated keys; may be `nil` if your provider does not support this kind of granularity.
+    @available(iOS 13.0, macOS 10.15, *)
     func didUpdateValuesForKeys(_ keys: Set<String>?) -> AnyPublisher<Set<String>, Never>?
 
     #endif
@@ -62,12 +63,12 @@ public protocol FlagsProvider {
 
 // MARK: - FlagsProvider (Default Publisher Behaviour)
 
-#if !os(Linux)
+#if canImport(Combine)
 
 /// Make support for real-time flag updates optional by providing a default nil implementation
 ///
 public extension FlagsProvider {
-
+    @available(iOS 13.0, macOS 10.15, *)
     func didUpdateValuesForKeys(_ keys: Set<String>?) -> AnyPublisher<Set<String>, Never>? {
         nil
     }