'Cancel' for PromiseKit -- provides the ability to cancel promises and promise chains

Author: dougzilla32

Cartfile.resolved

@@ -1 +1 @@
-github "dougzilla32/PromiseKit" "288f7fbabc0b33c558bf908a3a0770693223d4e0"
+github "dougzilla32/PromiseKit" "087b3cf470890ff9ea841212e2f3e285fecf3988"

Sources/UIViewPropertyAnimator+Promise.swift

@@ -4,14 +4,17 @@ import PromiseKit
 import UIKit
 
 @available(iOS 10, tvOS 10, *)
-public extension UIViewPropertyAnimator: CancellableTask {
+public extension UIViewPropertyAnimator {
     func startAnimation(_: PMKNamespacer) -> Guarantee<UIViewAnimatingPosition> {
         return Guarantee<UIViewAnimatingPosition>(cancellableTask: self) {
             addCompletion($0)
             startAnimation()
         }
     }
-    
+}
+
+@available(iOS 10, tvOS 10, *)
+extension UIViewPropertyAnimator: CancellableTask {
     public func cancel() {
         stopAnimation(true)
     }