multiple datasets

[Dustin Farris]

I have a use case where I need to provide multiple datasets to a Vega spec.

It would be nice to support this:
https://vega.github.io/vega-lite/docs/data.html#datasets

Basically I'm looking for an API along the lines of:

Vl.new()
|> Vl.datasets_from_values([
  main: my_main_data,
  other: my_other_data,
])
|> Vl.data_from_name(:main)
...
# Example usage (already possible)
|> Vl.transform(:lookup, :some_key, from: [data: [name: :other], key: :some_key, fields: [:some_field]])

[Jonatan Kłosko]

Available in v0.1.2 :)