Caged/d3-tip — pull request #5 by Caged (2013-04-08 18:54:55+00:00)
Title: Rewrite to use html-based tooltips and screen coordinates

* Updated API. You now need to specify events for `tip.hide` and `tip.show`.
* Uses `getScreenCTM` to properly position html-based tooltips on the screen
* Now supports HTML contents
* Styling is still left completely up to the user