v0.6.0

• Support for the Eternal difficulty
• Support for high resolution cover (1080_base.jpg, etc)
• Support cover thumbnail (base_256.jpg, etc) as fallback
• Support for per-difficaulty cover and audio
• Support for scenecontrol(trackdisplay)
• Rework support for scenecontrol(trackshow) and scenecontrol(trackhide)
• Support for add ArcTap without underlying Arc (By add the 1ms Arc automatically)
• Support for move ArcTap off from underlying Arc (By add the 1ms Arc automatically)
• Global audio offset
• Added switch to show chart time instead of audio time
• Rename "Base BPM"
• Rework value editor
• Various UX improvements, rendering changes and bug fixes