Creating pie charts with "row-oriented" data

This isn't a super high priority, but I wanted to make sure I wasn't missing something. I have data that comes from a source where I cannot modify it's output. The data are "row-oriented" and look like this:

```
"count","publishing_status"
200,"Published"
300,"Not Published"
```

Pretty simple. I want to make a pie chart out of this, but from what I can tell, pie charts accept column oriented data such that the above works best when transformed this way:

```
"publishing_status","Published","Not Published"
"count",200,300
```

It should be simple enough for me to transpose the data myself before giving it to C3, but before I do so, I wanted to make sure I wasn't missing something or doing something wrong. Specifically is there a way via configurations to feed the data in the first example so that the pie chart expects row-oriented data. Put another way, can I make the first example work in pie charts without writing my own little transpose function.