Fixed protect level for UIButton extension.

Author: ivanvorobei

Example Apps/SparrowKit.xcodeproj/project.xcworkspace/xcuserdata/ivanvorobei.xcuserdatad/UserInterfaceState.xcuserstate

@@ -12,12 +12,12 @@
 		<key>tvOS Example.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>1</integer>
+			<integer>3</integer>
 		</dict>
 		<key>watchOS Example.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>2</integer>
+			<integer>1</integer>
 		</dict>
 	</dict>
 	<key>SuppressBuildableAutocreation</key>

Example Apps/SparrowKit.xcodeproj/xcuserdata/ivanvorobei.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -22,14 +22,14 @@
 #if canImport(UIKit) && (os(iOS) || os(tvOS))
 import UIKit
 
-public extension UIButton {
+extension UIButton {
 
     /**
      SparrowKit: Set title for all states.
 
      - parameter title: Title for button.
      */
-    func setTitle(_ title: String) {
+    open func setTitle(_ title: String) {
         setTitle(title, for: .normal)
     }
 
@@ -39,7 +39,7 @@ public extension UIButton {
 
      - parameter color: Color of title.
      */
-    func setTitleColor(_ color: UIColor) {
+    open func setTitleColor(_ color: UIColor) {
         setTitleColor(color, for: .normal)
         setTitleColor(color.withAlphaComponent(0.7), for: .highlighted)
     }
@@ -49,7 +49,7 @@ public extension UIButton {
 
      - parameter image: Image for button.
      */
-    func setImage(_ image: UIImage?) {
+    open func setImage(_ image: UIImage?) {
         setImage(image, for: .normal)
         setImage(image, for: .highlighted)
         setImage(image, for: .disabled)
@@ -58,7 +58,7 @@ public extension UIButton {
     /**
      SparrowKit: Remove all targets.
      */
-    func removeAllTargets() {
+    open func removeAllTargets() {
         self.removeTarget(nil, action: nil, for: .allEvents)
     }
 }