Version 3.3.0

released Nov 27, 2019

Last release to support Python 2

Enhancements

• Add inheritance structure to low-level schema classes (#1803)
• Add html renderer which works across frontends (#1793)
• Support Python 3.8 (#1740, #1781)
• Add :G shorthand for geojson type (#1714)
• Add data generator interface: alt.sequence, alt.graticule,
  alt.sphere() (#1667, #1687)
• Support geographic data sources via __geo_interface__ (#1664)

Bug Fixes

• Support pickle and copy.deepcopy for chart objects (#1805)
• Fix bug when specifying count() within transform_joinaggregate() (#1751)
• Fix LayerChart.add_selection (#1794)
• Fix arguments to project() method (#1717)
• Fix composition of multiple selections (#1707)