Least Common Multiple for a array of elements.

It will be better to also have a `leastCommonMultiple` function for an array where I could pass an array of elements and get the result.
```js
export default function leastCommonMultiple(a, b) {
  return ((a === 0) || (b === 0)) ? 0 : Math.abs(a * b) / euclideanAlgorithm(a, b);
}
```