SPM updated to Swift 5.0.

Author: lomatrix

.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,43 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "CwlCatchException",
+        "repositoryURL": "https://github.com/mattgallagher/CwlCatchException.git",
+        "state": {
+          "branch": null,
+          "revision": "7cd2f8cacc4d22f21bc0b2309c3b18acf7957b66",
+          "version": "1.2.0"
+        }
+      },
+      {
+        "package": "CwlPreconditionTesting",
+        "repositoryURL": "https://github.com/mattgallagher/CwlPreconditionTesting.git",
+        "state": {
+          "branch": null,
+          "revision": "c228db5d2ad1b01ebc84435e823e6cca4e3db98b",
+          "version": "1.2.0"
+        }
+      },
+      {
+        "package": "Nimble",
+        "repositoryURL": "https://github.com/Quick/Nimble.git",
+        "state": {
+          "branch": null,
+          "revision": "b02b00b30b6353632aa4a5fb6124f8147f7140c0",
+          "version": "8.0.5"
+        }
+      },
+      {
+        "package": "Quick",
+        "repositoryURL": "https://github.com/Quick/Quick.git",
+        "state": {
+          "branch": null,
+          "revision": "33682c2f6230c60614861dfc61df267e11a1602f",
+          "version": "2.2.0"
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Package.resolved

@@ -1,15 +1,22 @@
-// swift-tools-version:4.0
+// swift-tools-version:5.0
 import PackageDescription
 
 let package = Package(
-	name: "When",
-	products: [
-		.library(name: "When", targets: ["When"]),
-		],
-	targets: [
-		.target(
-			name: "When",
-			dependencies: [],
-			path: "./Sources/When"),
-	]
-)
+    name: "When",
+    platforms: [
+        .macOS(.v10_10),
+        .iOS(.v8),
+        .tvOS(.v9)
+    ],
+    products: [
+        .library(name: "When", targets: ["When"]),
+    ], dependencies: [
+        .package(url: "https://github.com/Quick/Quick.git", .upToNextMinor(from: "2.2.0")),
+        .package(url: "https://github.com/Quick/Nimble.git", .upToNextMinor(from: "8.0.5"))
+    ],
+    targets: [
+        .target(name: "When", path: "Sources"),
+        .testTarget(name: "WhenTests", dependencies: ["When", "Quick", "Nimble"], path: "WhenTests"),
+    ],
+    swiftLanguageVersions: [.v5]
+)

Package.swift

@@ -1,5 +1,6 @@
 import Quick
 import Nimble
+import Dispatch
 @testable import When
 
 class FunctionsSpec: QuickSpec {

WhenTests/Shared/FunctionsSpec.swift

@@ -1,5 +1,6 @@
 import Quick
 import Nimble
+import Dispatch
 @testable import When
 
 class PromiseSpec: QuickSpec {