'Cancel' for PromiseKit -- add cancellable wrappers for the HomeKit extensions

Author: dougzilla32

Cartfile.resolved

@@ -1 +1 @@
-github "dougzilla32/PromiseKit" "ca04ff47d07b79edf9b1fc53be49e6c9d4148601"
+github "dougzilla32/PromiseKit" "e87ade8ea8910a04a2286e34ed5e52163176738c"

Sources/HMAcessoryBrowser+Promise.swift

@@ -76,3 +76,11 @@ private class BrowserProxy: PromiseProxy<[HMAccessory]>, HMAccessoryBrowserDeleg
 }
 
 #endif
+
+//////////////////////////////////////////////////////////// Cancellable wrapper
+
+extension HMPromiseAccessoryBrowser {
+    public func cancellableStart(scanInterval: ScanInterval) -> CancellablePromise<[HMAccessory]> {
+        return cancellable(start(scanInterval: scanInterval))
+    }
+}

Sources/HMHomeManager+Promise.swift

@@ -65,3 +65,12 @@ internal class HMHomeManagerProxy: PromiseProxy<[HMHome]>, HMHomeManagerDelegate
         super.cancel()
     }
 }
+
+//////////////////////////////////////////////////////////// Cancellable wrapper
+
+@available(iOS 8.0, tvOS 10.0, *)
+extension HMHomeManager {
+    public func cancellableHomes() -> CancellablePromise<[HMHome]> {
+        return cancellable(homes())
+    }
+}