SRQuestDownloader v1.1.1

What's Changed

From Marinus feedback, UI improvements by @bookdude13 in #13

• Default to all difficulties selected
• If no difficulties selected, act as if all are selected (no filters means select all)
• Underline selected difficulties
• Update button text when doing any action. Label as Fetch All or Fetch Filtered based on if filters are applied or not

Full Changelog: v1.1.0...v1.1.1