Table setFontColorProvider is off by one

Hello,

I needed to fiddle around with the function to avoid being off by one when returning a Color for a cell like this

```python
table = TableDisplay(df)
table.setStringFormatForTimes(TimeUnit.DAYS)

def color_provider(row, column, table):
row = table.values[row]
if column < len(row) - 1:
val = row[column + 1]
if val is 3:
return Color.GREEN
return Color.BLACK

table.setFontColorProvider(color_provider)

table
```

is there another attribute than `table.values` that is meant to be used for that or is it just off by one?