message: show whats new only in production env
diff: @@ -145,7 +145,10 @@ browser.runtime.onMessageExternal.addListener((message, sender, sendResponse) =>
  });
  browser.runtime.onInstalled.addListener(() => {
  + // Notify updates only in production
  + if (process.env.NODE_ENV === "production") {
  browser.storage.local.set({
  updated: true
  });
  + }
  });
  