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.