Function rangeStream

rangeStream(
    initWith?: NumericRange,
): {
    reset: () => void;
    seen: (v: any) => { max: number; min: number };
    get max(): number;
    get min(): number;
    get range(): { max: number; min: number };
}
Keeps track of min/max values.
```
const s = rangeStream();
s.seen(10);  // { min: 10, max: 10}
s.seen(5);   // { min:5, max: 10}
```
When calling seen, non-numbers, or non-finite numbers are silently ignored.
```
s.reset();   // Reset
s.min/s.max; // Current min/max
s.range;     // Current { min, max }
```
Parameters
- initWith: NumericRange = ...
Returns {
    reset: () => void;
    seen: (v: any) => { max: number; min: number };
    get max(): number;
    get min(): number;
    get range(): { max: number; min: number };
}
- Defined in range.ts:128