Kanit Wongsuphasawat

Closing as we probably won't get to include this special scale. It might be worth thinking if we want to do special condition like we might do for size. https://github.com/vega/vega-lite/issues/3488

Re-open since 1) we can do conditional encoding to achieve this. 2) we can decouple "length" handling from size handling in #3488

The bullet chart is also broken https://vega.github.io/vega-lite/examples/facet_bullet.html 

@PBI-David This looks good. I think it'd be good to add as an example. I'm happy to review a PR if we wanna a basic example without much customization (so...

Though it's unclear (1) what should be the syntax to enable / disable automatic imputation and (2) which time units should be automatically imputed. For (2), quarter, month, day obviously...

@starry97 -- one possibility for all of these offset thing is having `calloutAngle` and then makes all of the `calloutOffset`, `calloutSize` (maybe rename to `calloutLength`), `labelOffset` just `number` rather than...

Rebase onto `2.x-annotation`? (The first commit is redundant)

Sorry for going back and forth. I google callout and only see cloud style callout. This makes me wonder if `calloutline` is a better mark name. In any case, changing...

I'm playing with it a little bit. Here is another example you could polish and consider adding: ``` { "$schema": "https://vega.github.io/schema/vega-lite/v2.json", "description": "Google's stock price over time.", "data": {"url": "data/stocks.csv"},...

- [ ] Besides `align`, `baseline` is important too. You might wanna look at @NeelMohapatra's PR recently to see if you can reuse similar rules.