Dropped Carthage development requirement for Swift Packages

Author: Joe Newton

.gitignore

@@ -1,4 +1,4 @@
-CBORCoding.xcodeproj/project.xcworkspace
+CBORCoding.xcodeproj/project.xcworkspace/xcuserdata
 CBORCoding.xcodeproj/xcuserdata
 CBORCoding.xcworkspace/xcuserdata
 .build

CBORCoding.xcodeproj/project.pbxproj

@@ -16,11 +16,13 @@ let package = Package(
     ],
 
     dependencies: [
-        .package(url: "https://github.com/SomeRandomiOSDev/Half", from: "1.0.0")
+        .package(url: "https://github.com/SomeRandomiOSDev/Half", from: "1.2.0")
     ],
 
     targets: [
         .target(name: "CBORCoding", dependencies: ["Half"]),
-        .testTarget(name: "CBORCodingTests", dependencies: ["CBORCoding"])
-    ]
+        .testTarget(name: "CBORCodingTests", dependencies: ["CBORCoding", "Half"])
+    ],
+
+    swiftLanguageVersions: [.version("4.2"), .version("5")]
 )

CBORCoding.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,21 @@
+// swift-tools-version:4.2
+import PackageDescription
+
+let package = Package(
+    name: "CBORCoding",
+
+    products: [
+        .library(name: "CBORCoding", targets: ["CBORCoding"])
+    ],
+
+    dependencies: [
+        .package(url: "https://github.com/SomeRandomiOSDev/Half", from: "1.2.0")
+    ],
+
+    targets: [
+        .target(name: "CBORCoding", dependencies: ["Half"]),
+        .testTarget(name: "CBORCodingTests", dependencies: ["CBORCoding", "Half"])
+    ],
+
+    swiftLanguageVersions: [.v4_2]
+)

CBORCoding.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -93,8 +93,6 @@ Contributing
 
 If you have need for a specific feature or you encounter a bug, please open an issue. If you extend the functionality of **CBORCoding** yourself or you feel like fixing a bug yourself, please submit a pull request.
 
-Note: You'll need to run `carthage bootstrap` upon downloading to resolve and build **CBORCoding**'s dependencies before being able to develop locally. Please look [here](https://github.com/Carthage/Carthage) for more info on installing Carthage on your local machine.
-
 Author
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