Fails to unpack numbers > UINT_MAX (4294967295)

Such code works:

``` javascript
var UINT_MAX = 4294967295;

BinaryPack.unpack(
    BinaryPack.pack(
        { number: UINT_MAX }
    )
);
```

This throws ( RangeError: Maximum call stack size exceeded ):

``` javascript
BinaryPack.unpack(
    BinaryPack.pack(
        { number: UINT_MAX + 1 }
    )
);
```
