Expand description
Create ranges in a very explicit manner
Start with the from() function and build up a range using From::up_to or
From::down_to.
§Examples
extern crate a_range;
let x = a_range::from(5).up_to(7);
assert_eq!(x.to_vec(), vec![5, 6, 7]);
let x = a_range::from(3).down_to(1);
assert_eq!(x.to_vec(), vec![3, 2, 1]);