0.6.0 (Sep 2014)
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* Abstract Rendering recipes for large data sets: isocontour, heatmap, hdalpha
* Improved, configurable tool bar for plots
* Full Python 3 support for bokeh-server
* Much expanded User Guide
* Support for multiple axes
* Plot object graph query interface
* New charts in bokeh.charts: TimeSeries and Categorical HeatMap
* Hit-testing for patch glyphs
