Merge pull request #263 from DigitalMasterpieces/fix/xcode-12

Set minimum deployment version to iOS 9

Author: srdanrasic

Package.swift

@@ -4,7 +4,7 @@ import PackageDescription
 let package = Package(
     name: "ReactiveKit",
     platforms: [
-        .macOS(.v10_10), .iOS(.v8), .tvOS(.v9), .watchOS(.v2)
+        .macOS(.v10_10), .iOS(.v9), .tvOS(.v9), .watchOS(.v2)
     ],
     products: [
         .library(name: "ReactiveKit", targets: ["ReactiveKit"])