Nov 7, 2016
Major additions
- Update to Vega-Lite 1.2 and make all its enhancements available to Altair
- Add `Chart.serve` method
([197](https://github.com/altair-viz/altair/pull/197))
- Add `altair.expr` machinery to specify transformations and filterings
([213](https://github.com/altair-viz/altair/pull/213))
- Add `Chart.savechart` method, which can output JSON, HTML, and (if Node
is installed) PNG and SVG. See https://altair-viz.github.io/documentation/displaying.html
Bug Fixes
- Countless minor bug fixes
Maintenance:
- Update to Vega-Lite 1.2.1 and add its supported features
- Create website: http://altair-viz.github.io/
- Set up Travis to run conda & pip; and to build documentation