Package: Use SwiftyLinkerKit 0.1.3 tag

... instead of `develop` branch.

Author: helje5

Package.swift

@@ -25,7 +25,7 @@ let package = Package(
         .package(url: "https://github.com/NozeIO/swift-nio-irc-webclient.git",
                  from: "0.6.0"),
         .package(url: "https://github.com/SwiftyLinkerKit/SwiftyLinkerKit.git",
-                 .branch("develop")) //from: "0.1.0"),
+                 from: "0.1.3")
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.