Fasttracker II clone v1.66

• Added a 16 point sinc interpolation option (higher quality)
• Changed some settings for the default configuration:
  1. Palette theme = Dark mode
  2. Scopes = Lined
     Note: Your existing configuration will not be changed!
• Changed the layout a little in the Config section (Audio / "I/O Devices")
• Removed the 192kHz audio output setting. This was a bit extreme to begin with.
  Note: You can still select this rate when exporting songs to WAV.
• Some code cleanup