Build as dynamic library.

.gitignore

@@ -21,9 +21,8 @@ DerivedData
 
 # Bundler
 .bundle
-
-# Swift Package Manager
-.build
+.swiftpm
+Package.resolved
 
 Carthage/Build
 Pods/

Package.swift

@@ -1,11 +1,15 @@
-// swift-tools-version:4.2
+// swift-tools-version:5.1
 import PackageDescription
 
 let package = Package(
     name: "WolfWith",
+    platforms: [
+        .iOS(.v9), .macOS(.v10_13), .tvOS(.v11)
+    ],
     products: [
         .library(
             name: "WolfWith",
+            type: .dynamic,
             targets: ["WolfWith"]),
         ],
     targets: [

WolfWith.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
     s.name             = 'WolfWith'
-    s.version          = '1.0.3'
+    s.version          = '2.0.1'
     s.summary          = 'A Swift implementation of the With-Operator.'
 
     # s.description      = <<-DESC
@@ -14,7 +14,7 @@ Pod::Spec.new do |s|
 
     s.source_files = 'Sources/WolfWith/**/*'
 
-    s.swift_version = '4.2'
+    s.swift_version = '5.0'
 
     s.ios.deployment_target = '9.3'
     s.macos.deployment_target = '10.13'