0.3.0

The major feature of this release is support of raster data via Canvas.raster. To use this feature, you must install the optional dependencies via conda install rasterio scikit-image. rasterio relies on gdal, whose conda package has some known bugs, including a missing dependancy for conda install krb5. InteractiveImage in this release requires bokeh 0.11.1 or earlier, and will not work with bokeh 0.12.

• PR #160 #187 Improved example notebooks and dashboard
• PR #186 #184 #178 Add datashader-download-data cli command for grabbing example datasets
• PR #176 #177 Changed census example data to use HDF5 format (slower but more portable)
• PR #156 #173 #174 Added Landsat8 and race/ethnicity vs. elevation example notebooks
• PR #172 #159 #157 #149 Added support for images using Canvas.raster (requires rasterio and scikit-image)
• PR #169 Added legends notebook demonstrating create_categorical_legend and create_ramp_legend
• PR #162 Added notebook example for datashader.bokeh_ext.HoverLayer
• PR #152 Added alpha arg to tf.interpolate
• PR #151 #150, etc. Small bugfixes
• PR #146 #145 #144 #143 Added streaming example
• Added hold decorator to utils, summarize_aggregate_values helper function
• Added FAQ to docs

Backwards compatibility:

• Removed memoize_method
• Renamed datashader.callbacks --> datashader.bokeh_ext
• Renamed examples/plotting_problems.ipynb --> examples/plotting_pitfalls.ipynb