* Adding positional style of calling to encode * Added channel_name to channels * Added Text, Label, Detail, Path channel classes. * Renamed col->column to follow spec.
* Adding positional style of calling to encode
* Added channel_name to channels
* Added Text, Label, Detail, Path channel classes.
* Renamed col->column to follow spec.

altair-viz/altair,jakevdp/altair,ellisonbg/altair