Max Wu 0a253a4f32 feat: upgrade vega to 5.9.1, vega-embed to 6.2.2, vega-lite to 4.4.0
also update the schema link in the features.md

Signed-off-by: Max Wu <jackymaxj@gmail.com>
2020-02-27 18:20:41 +08:00
..
2018-06-24 14:13:46 +02:00
2019-12-14 00:12:37 +08:00