Fix for zeros erroneously being written as empty.

In Utils.cs inside of NumericFormating...

Changed...

```cs
for (var i = 0; i < sizeWholePart; i++) {
  format.Append(sizeWholePart + 1 == sizeWholePart ? "0" : "#");
}
```
...to this.

```cs
for (var i = 0; i < sizeWholePart; i++) {
  format.Append(i + 1 == sizeWholePart ? "0" : "#");
}
```