Update package

Author: daneden

Package.swift

@@ -1,28 +1,23 @@
 // swift-tools-version:5.5
-// The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
 
 let package = Package(
-    name: "Twift",
-    products: [
-        // Products define the executables and libraries a package produces, and make them visible to other packages.
-        .library(
-            name: "Twift",
-            targets: ["Twift"]),
-    ],
-    dependencies: [
-        // Dependencies declare other packages that this package depends on.
-        // .package(url: /* package url */, from: "1.0.0"),
-    ],
-    targets: [
-        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
-        // Targets can depend on other targets in this package, and on products in packages this package depends on.
-        .target(
-            name: "Twift",
-            dependencies: []),
-        .testTarget(
-            name: "TwiftTests",
-            dependencies: ["Twift"]),
-    ]
+  name: "Twift",
+  platforms: [
+    .macOS(.v12), .iOS(.v15)
+  ],
+  products: [
+    .library(
+      name: "Twift",
+      targets: ["Twift"]),
+  ],
+  targets: [
+    .target(
+      name: "Twift",
+      path: "Sources"),
+    .testTarget(
+      name: "TwiftTests",
+      dependencies: ["Twift"]),
+  ]
 )

Sources/Twift/Twift+Errors.swift

@@ -1,6 +1,5 @@
 import Foundation
 
-@available(macOS 12.0, *)
 extension Twift {
   enum TwiftError: Error {
     case CallbackURLError

Sources/Twift/Twift.swift

@@ -12,7 +12,6 @@ struct OAuthToken: Codable {
   }
 }
 
-@available(macOS 12.0, *)
 @MainActor
 class Twift: NSObject, ObservableObject {
   var clientCredentials: OAuthToken
@@ -162,7 +161,6 @@ extension String {
   }
 }
 
-@available(macOS 12.0, *)
 extension Twift: ASWebAuthenticationPresentationContextProviding {
   func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
     return ASPresentationAnchor()