Update for Big Sur & SwiftUI 2 (#128)

Brief/Updater.swift

@@ -11,8 +11,11 @@ public class Updater: ObservableObject, UpdaterProtocol {
 
     @Published public var update: Release?
 
-    public init() {
-        checkForUpdates()
+    public init(checkOnLaunch: Bool) {
+        if checkOnLaunch {
+            // Don't do a launch check if the user hasn't seen the setup prompt explaining updater yet.
+            checkForUpdates()
+        }
         let timer = Timer.scheduledTimer(withTimeInterval: 60*60*24, repeats: true) { _ in
             self.checkForUpdates()
         }
@@ -41,6 +44,7 @@ extension Updater {
 
     func evaluate(release: Release) {
         guard !userIgnored(release: release) else { return }
+        guard !release.prerelease else { return }
         let latestVersion = semVer(from: release.name)
         let currentVersion = semVer(from: Bundle.main.infoDictionary!["CFBundleShortVersionString"] as! String)
         for (latest, current) in zip(latestVersion, currentVersion) {
@@ -82,22 +86,31 @@ extension Updater {
 public struct Release: Codable {
 
     public let name: String
+    public let prerelease: Bool
     public let html_url: URL
     public let body: String
 
-    public init(name: String, html_url: URL, body: String) {
+    public init(name: String, prerelease: Bool, html_url: URL, body: String) {
         self.name = name
+        self.prerelease = prerelease
         self.html_url = html_url
         self.body = body
     }
 
 }
 
+extension Release: Identifiable {
+
+    public var id: String {
+        html_url.absoluteString
+    }
+
+}
 
 extension Release {
 
     public var critical: Bool {
-        return body.contains(Constants.securityContent)
+        body.contains(Constants.securityContent)
     }
 
 }