Sandpile implementation in Rust. WIP.
```rust extern crate sandpile; use sandpile::Sandpile;
fn main() { let rows = 3; let cols = 3;
// Create a new sandpile.
let a = Sandpile::new(rows, cols, Some(vec![1,2,3,1,2,3,1,2,3]));
// Create another sandpile.
// Since no initialization data is provided,
// the sandpile will be populated with 0s
let b = Sandpile::new(rows, cols, None);
// We have overloaded the '+' operator for sandpiles.
let c = a + b;
println!("{}", c);
} /* Output: 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 | */ ```
MIT