Function shuffle

shuffle<T>(stack: T[]): T[]
Randomize an array of arbitrary elements.
Type Parameters
- T
Parameters
- stack: T[]
  An array of arbitrary elements
Returns T[]
The stack array in a random order
Example
```
const shuffled = SMath.shuffle(['a', 'b', 'c']); // [ 'c', 'a', 'b' ]
```