1.2.0

• Working versions for Windows and Linux
• Add to UI list of failed photo downloads
• Add to UI text of photo number to start downloading
• Add to UI modal of when scraper fails
• When scraper fails, update form with last photo number downloaded
• Don't show Stop Scraper button until Puppeteer browser is running
• Continue showing progress status in UI on fail or crash
• Handle problem with Facebook.com not loading some photos in new tab
• Removed electron-updater library because it required code signing