Fraction consisting from two u64 numbers

Allows to keep and work with fractions on stack.

Be aware of possible stack overflows that might be caused by exceeding u64 limits in some math operations, which will make thread to panic.

Examples

use fraction::Fraction;

let first = Fraction::new (1u8, 2u8);
let second = Fraction::new (2u8, 8u8);

assert_eq! (first + second, Fraction::new (3u8, 4u8));