Add an SPM package manifest (#54)

* Add an SPM package manifest

* Declare tests in package manifest

* Lower minimum version

.gitignore

@@ -94,3 +94,6 @@ fastlane/test_output
 # https://github.com/johnno1962/injectionforxcode
 
 iOSInjectionProject/
+.DS_Store
+.swiftpm/
+.swiftpm/*

Package.swift

@@ -0,0 +1,43 @@
+// swift-tools-version:5.2
+//
+//  Copyright © 2020 Rajdeep Kwatra. All rights reserved.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+
+import PackageDescription
+
+let package = Package(
+    name: "Proton",
+    platforms: [
+        .iOS(.v11),
+    ],
+    products: [
+        .library(name: "Proton", targets: ["Proton"])
+    ],
+    dependencies: [
+        .package(name: "SnapshotTesting", url: "https://github.com/pointfreeco/swift-snapshot-testing.git", .branch("master"))
+    ],
+    targets: [
+        .target(
+            name: "Proton",
+            dependencies: [],
+            path: "Proton/Sources"
+        ),
+        .testTarget(
+            name: "ProtonTests",
+            dependencies: ["Proton", "SnapshotTesting"],
+            path: "Proton/Tests"
+        )
+    ]
+)

Proton/Tests/Core/RichTextViewContextTests.swift

@@ -171,7 +171,8 @@ class RichTextViewContextTests: XCTestCase {
             testExpectation.fulfill()
         }
 
-        _ = context.textViewDidChange(textView)
+        context.textViewDidChange(textView)
+
         waitForExpectations(timeout: 1.0)
     }