Some minor cleanup

Author: wtmoose

SwiftMessages/Animator.swift

@@ -10,7 +10,7 @@ import UIKit
 
 public typealias AnimationCompletion = (_ completed: Bool) -> Void
 
-public protocol AnimationDelegate: class {
+public protocol AnimationDelegate: AnyObject {
     func hide(animator: Animator)
     func panStarted(animator: Animator)
     func panEnded(animator: Animator)
@@ -58,7 +58,7 @@ public class AnimationContext {
     }
 }
 
-public protocol Animator: class {
+public protocol Animator: AnyObject {
 
     /// Adopting classes should declare as `weak`.
     var delegate: AnimationDelegate? { get set }

SwiftMessages/TopBottomAnimation.swift

@@ -19,17 +19,17 @@ public class TopBottomAnimation: NSObject, Animator {
 
     public let style: Style
 
-    open var showDuration: TimeInterval = 0.4
+    public var showDuration: TimeInterval = 0.4
 
-    open var hideDuration: TimeInterval = 0.2
+    public var hideDuration: TimeInterval = 0.2
 
-    open var springDamping: CGFloat = 0.8
+    public var springDamping: CGFloat = 0.8
 
-    open var closeSpeedThreshold: CGFloat = 750.0;
+    public var closeSpeedThreshold: CGFloat = 750.0;
 
-    open var closePercentThreshold: CGFloat = 0.33;
+    public var closePercentThreshold: CGFloat = 0.33;
 
-    open var closeAbsoluteThreshold: CGFloat = 75.0;
+    public var closeAbsoluteThreshold: CGFloat = 75.0;
 
     public private(set) lazy var panGestureRecognizer: UIPanGestureRecognizer = {
         let pan = UIPanGestureRecognizer()