More accurate availability and hang on to BrowserProxy after starting a scan

Author: ChrisChares

Sources/HMAcessoryBrowser+Promise.swift

@@ -10,7 +10,8 @@ public class HMPromiseAccessoryBrowser {
     private var proxy: BrowserProxy?
 
     public func start(scanInterval: ScanInterval) -> Promise<[HMAccessory]> {
-        return BrowserProxy(scanInterval: scanInterval).promise
+        proxy = BrowserProxy(scanInterval: scanInterval)
+        return proxy!.promise
     }
 
     public func stop() {

Sources/HMHome+Promise.swift

@@ -13,7 +13,7 @@ extension HMHome {
 
 #if !os(tvOS) && swift(>=3.2)
     /// Add and setup a new HMAccessory.  Displays it's own UI
-    @available(iOS 11.3, OSX 10.13, watchOS 4.0, *)
+    @available(iOS 11.3, *)
     public func addAndSetupAccessories(with payload: HMAccessorySetupPayload) -> Promise<[HMAccessory]> {
         return Promise { seal in
             self.addAndSetupAccessories(with: payload, completionHandler: seal.resolve)