Account for trailing characters when wrapping

**Example:**

Set your terminal column size to 31.

```
>>> arr = np.zeros((1,2,1,9))
>>> fmt = Array(Number(3, 2))
>>> print(fmt(arr))
[[[[   0.00,    0.00,    0.00, 
....   0.00,    0.00,    0.00, 
....   0.00,    0.00,    0.00]]
,  # <-------------------------------------- This guy.
..[[   0.00,    0.00,    0.00, 
....   0.00,    0.00,    0.00, 
....   0.00,    0.00,    0.00]]]]
```
