0.6.1

This bamboo release includes:

* datetime columns are now counted as factors and can be used as groupby columns in the summary
* new `dataset/[DATASET ID]/plot` endpoint that returns HTML/JS plots of datasets

The plot docs could use more examples, if you make an interesting plot with public data, please send out a link!

There's no UI for defining plots, it is all through the URL, if anyone is interested in putting together a UI, that would be much appreciated.

The docs and some examples: http://bamboo.io/docs/plotting