TuneUp Version 35

Changes from Version 34:
- Shuffle and Continuous Play are real Tab buttons again.
- Press Enter or Spacebar on either focused button to toggle it.
- The button label includes its current On/Off state and activation hint.
- Bracket shortcuts remain unchanged:
  [ = Shuffle On
  ] = Shuffle Off
  Shift+[ = Continuous Play On
  Shift+] = Continuous Play Off
- P remains the global Play/Pause shortcut.
- Spacebar is not a global Play/Pause command; it activates a focused Windows button.
