* Upgrade for Cesium 1.64 * Allow for custom Ion access tokens * Fix HTML output
0.4.0
* 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
0.3.0
* 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`