minBarHeight and zero'd values don't render

# ❔Question

Using the `BarChart`, I have`minBarHeight` set to 0 and data points that looks like this:

```
["2015-12-1", 80, 38, 44, 100, "id"],
["2015-12-2", 17, 20, 29, 100, "id"],
["2015-12-3", 2, 67, 60, 100, "id"],
["2015-12-4", 73, 77, 79, 100, "id"],
["2015-12-5", 0, 0, 0, 100, "id"],
["2015-12-6", 58, 57, 78, 100, "id"],
["2015-12-7", 72, 59, 52, 100, "id"],
["2015-12-8", 12, 34, 9, 100, "id"],
["2015-12-9", 82, 36, 58, 100, "id"]
```

For `2015-12-5` You'll notice that 3 of the columns are 0 and one is 100. In this case, nothing renders for that day. Should it be expected that the one data point that's 100 would render, whereas the others simply would not?

Thank you!

Start at the BarChart component and trace how minBarHeight and zero-valued data points are handled for the supplied time-series data. Confirm whether the 100-valued column renders on 2015-12-5 while the zero-valued columns do not, then determine the expected behavior from the component's existing rendering logic.

Written by the indexing model from the issue text.