### `prng_xor4096`

xor4096, by Richard Brent, is a 4096-bit xor-shift with a
very long period that also adds a Weyl generator. It also passes
BigCrush with no systematic failures.  Its long period may
be useful if you have many generators and need to avoid
collisions.

- **Period:** 2^4128-2^32.
- **Reported to pass:** No systematic BigCrush failures reported.

```javascript
import {prng_xor4096} from 'esm-seedrandom'
import {prng_xor4096} from 'esm-seedrandom/esm/xor4096.js'
import prng_xor4096 from 'esm-seedrandom/esm/xor4096.js'

// from a browser or deno environment
import {prng_xor4096} from '//cdn.jsdelivr.net/npm/esm-seedrandom/esm/index.min.js'
import {prng_xor4096} from '//cdn.jsdelivr.net/npm/esm-seedrandom/esm/xor4096.min.js'


let myrng = prng_xor4096('an example seed string', {state: true})

console.log(myrng()); // between 0.0 and 1.0 as f32
console.log(myrng.quick()); // between 0.0 and 1.0 as f32
console.log(myrng.double()); // between 0.0 and 1.0 as f64
console.log(myrng.int32()); // between -2147483648 and 2147483647


let mystate = myrng.state()
console.log(mystate); // a JSON-serializable object capturing the internal PRNG state

let dup_myrng = prng_xor4096(null, {state: mystate})
```