Function thrice

thrice(func: Function): Function
Returns a new function which when applied to an argument, has the same effect as applying the specified function to the same argument 3 times.
Parameters
- func: Function
  the function to be repeated
Returns Function
the new function that has the same effect as (x => func(func(func(x))))
Example
```
const plusNine = thrice(x => x + 3);
plusNine(0); // Returns 9
```