* Line charts now have a new tooltip option available. This new tooltip displays all series information at once, and shows up anywhere your mouse moves.
To enable, set **useInteractiveGuideline** to true. See examples in the **test/** directory for how this tooltip works.
* New test pages have been created for various kinds of charts. They live in the **test/** directory. The goal of these test pages is to aid
in regression testing coverage when changes are made to charts.
* Pie charts accept data in a different way, and if you update to version 1.1, your pie charts will likely break. See the pie chart examples for how
data should be properly passed in. It's a very simple change.
* Pie charts can now accept a 'labelType' property.
* Tooltip transitions are **turned off** by default, if you update to the latest nv.d3.css. To bring them back, add a 'with-transitions' CSS class
to the containing chart DIV.
* Stacked area charts have transitions again. Duration is controlled via a 'transitionDuration' property.
If one of [the existing models](https://github.com/novus/nvd3/tree/master/src/models) doesn't meet your needs, fork the project, implement the model and an example using it, send us a pull request, for consideration for inclusion in the project.
We are currently changing our branch structure so that master will be gauranteed stable. In addition, there is now a "development" branch. This branch reflects the latest changes to nvd3 and is not necessarily stable.