Update from Vega-Lite 5.7.1 to 5.8.0

[mattijn]

This updates Altair to use Vega-Lite 5.8.0.

One thing I notice in the diff-changes:

old, 5.7.1

    fit : anyOf(List(:class:`GeoJsonFeature`), List(:class:`Fit`), :class:`ExprRef`)

new, 5.8.0

    fit : anyOf(:class:`Fit`, List(:class:`Fit`), :class:`ExprRef`)

where https://altair-viz.github.io/gallery/wind_vector_map.html is using a GeoJsonFeature for fit.

Not sure yet if this a regression.

Also this depends on this PR at the altair_viewer repo altair-viz/altair_viewer#57 which awaits confirmation to be merged.

[mattijn]

https://altair-viz.github.io/gallery/wind_vector_map.html now gives:

SchemaValidationError: 'Polygon' is an invalid value for `type`.

'Feature' was expected
'FeatureCollection' was expected

When defining a Feature, including a properties member it works:

extent = {
    "type": "Feature",
    "geometry": {
        "type": "Polygon",
        "coordinates": [
            [
                [xmax, ymax],
                [xmax, ymin],
                [xmin, ymin],
                [xmin, ymax],
                [xmax, ymax],
            ]
        ],
    },
    "properties": {},
}

[mattijn]

I've updated the tests and documentation reflecting the changes in VL5.8. The change introduced was for the fit parameter within projection() and I feel the change is actually an improvement and not a regression.

Are you able to update vl-convert @jonmmease? I've tested locally including altair-viz/altair_viewer#57 and remaining failing tests are due to not being able to save it to file (svg/png).

[jonmmease]

Yes, update is in the works in vega/vl-convert#55. I'll ping you here when everything is published (should be within a few hours if I don't hit any snags).

[mattijn]

Thanks, that is great🙏👍

[jonmmease]

Ok, vl-convert-python 0.9.0 with Vega-Lite 5.8.0 support is on PyPI

[mattijn]

Thanks @jonmmease, all tests pass, merging here👍