Added @avaiability in tvOS 11

Author: malcommac

Sources/SwiftRichString/Style/Style.swift

@@ -328,6 +328,7 @@ public class Style: StyleProtocol {
 
 	/// No overview available.
 	/// Note: available only from iOS 11, tvOS 11 and watchOS 4.
+	@available(tvOS 11.0, *)
 	@available(iOS 11.0, *)
 	@available(iOSApplicationExtension 11.0, *)
 	public var speakingPronunciation: String? {
@@ -341,6 +342,7 @@ public class Style: StyleProtocol {
 	///
 	/// The default behavior is to interrupt existing speech.
 	@available(iOS 11.0, *)
+	@available(tvOS 11.0, *)
 	@available(iOSApplicationExtension 11.0, *)
 	public var shouldQueueSpeechAnnouncement: Bool? {
 		set {
@@ -362,8 +364,9 @@ public class Style: StyleProtocol {
 	/// Specify the heading level of the text.
 	/// Value is a number in the range 0 to 6.
 	/// Use 0 to indicate the absence of a specific heading level and use other numbers to indicate the heading level.
-	@available(iOSApplicationExtension 11.0, *)
 	@available(iOS 11.0, *)
+	@available(tvOS 11.0, *)
+	@available(iOSApplicationExtension 11.0, *)
 	public var headingLevel: HeadingLevel? {
 		set {
 			let key = NSAttributedStringKey(UIAccessibilityTextAttributeHeadingLevel)

SwiftRichString.xcodeproj/project.pbxproj

@@ -1689,7 +1689,7 @@
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = 3;
-				TVOS_DEPLOYMENT_TARGET = 11.0;
+				TVOS_DEPLOYMENT_TARGET = 10.0;
 			};
 			name = Debug;
 		};
@@ -1715,7 +1715,7 @@
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = 3;
-				TVOS_DEPLOYMENT_TARGET = 11.0;
+				TVOS_DEPLOYMENT_TARGET = 10.0;
 			};
 			name = Release;
 		};