Randomized Circular Gallifreyan Coin

kitlaan's Circular Gallifreyan Coin with a few minor tweaks that I think look cool.

• Lines cross the entire coin
• Lines go in randomized directions.
• Added 'seed' parameter. Change its value to change where the lines go.
• Increased $fn to make the curves smoother (and Customizable).
  Same in all other ways. kitlaan rocks.