* example: update trellis_area to use facet

See #3178

This removes the old trellis_area example, because that is just a
simpler version of the sorted version.
Might as well just have the sorted version,
it is easy enough to see how you would jusst remove the sort
to get back to the original example.

This also adds some commas to the code so that
black keeps the formatting the same.

I wanted to update the name of the example so that it didn't contain
the word "trellis". While
I was at it I also wanted the examples to be in better sort order.

* example: Use facet in trellist_stacked_bar_chart

See #3178

* example: Use facet in bar_chart_trellis_compact

See #3178

* example: Use facet in trellis_scatter_plot

See #3178

* example: Use facet in trellis_histogram

See #3178

* example: Use facet in beckers_barley_trellis_plot

See #3178

* example: Remove trellis in beckers_barley_wrapped

See #3178

This also re-categorizes this example as a case study.
I think this makes more sense, as it puts it with the other
beckers barley example.
And there aren't really any advance calculations
going on.

* example: remove facet in density_facet

This isn't an example of faceting, but repeating.

See #3178

* example: Fix "facet" use in scatter_marginal_hist

The scatter plot is not faceted, but the
marginal scatter plots are, with
one histogram for eadch subset.

See #3178

* example: Use facet in ridgeline_plot

This is using faceting, so let's
call it out explicitly so people
learn the terminology.

See #3178

* example: Use facet in anscombe_plot

See #3178

* docs: Link to "trellis" etc in definition of Facet

See #3178

Also improve the intro to Faceted charts.

* Add tutorial on numpy tooltip images

* Add note on chart size

* First type hints for code generation

* Remove redundant code relating to support for multiple VL versions and other things

* Rename codegen._get_args to get_args and use a dataclass as return value

* Remaining type hints

…lled (#3210)

* Work around pandas-dev/pandas#55332

* Only test boolean column with pandas >= 1.0.0

* Include instructions on how to update vega lite and auto created files

* Update VL version

* Add updates from regenerating auto files

* Add release notes

* Remove mention of altair-saver from docs

* Update CONTRIBUTING.md

* Add note on pyarrow bool bug fix

* Update to 5.15.1

* Update to 5.15.1

* Require newer vl-convert

* Update vl-convert version