v0.5.4

Add several new properties: ViewFrom, Box, Corridor, Cylinder, Ellipse, Ellipsoid, TileSet, Wall
Add new materials: PolylineOutlineMaterial, PolylineGlowMaterial, PolylineArrowMaterial, PolylineDashMaterial
Add Position.cartesianVelocity, Billboard.eyeOffset, and Label.pixelOffset
Add utilities to create and validate colors: Color.is_valid, utils.get_color_list
Other minor additions and bug fixes

Thanks to all contributors!

Clément Jonglez
Eleftheria Chatziargyriou
Idan Miara
Joris Olympio
Juan Luis Cano Rodríguez
Michael Haberler

v0.5.3

Add Rectangle and RectangleCoordinates

v0.5.2

Fix packaging

v0.5.1

Fix widget for non-local Jupyter notebook deployments

v0.5.0

Upgrade for Cesium 1.64
Allow for custom Ion access tokens
Fix HTML output

v0.4.0

Rewrite internals using attrs!
Properly support packet comparison
Use unique container ids for the CZML widget
New properties Model and Orientation
New type UnitQuaternionValue
Some new enumerations

v0.3.0

Changelog!
General improvements in README
New CZMLWidget to display a Cesium window in Jupyter
New czml3.examples with some more complex CZML examples
New properties Box, BoxDimensions, EyeOffset
New czml3.utils.get_color
Stricter validation for Position