Update to 1.6.0.0

Hello!

A new small fix for you!

[h3]Added[/h3]

• Using green as default note color.
  

[h3]Fixed[/h3]

• Cleaned up memory of background track manually when unloading the 'Music Arena' and does not load background tracks to memory in lobby to prevent excessive RAM usage.
  
• Set default maximum FPS to 60 to prevent GPUs from burning.
  
• Switched description and credits of 'We wish you a merry Christmas'.
  
• Load settings in splash screen to remove stuttering when opening the settings, the first time.
  
• Accuracy Rating of player will no longer break when a song contains overlapping notes in a glissando (Happened in track from workshop).