Fixes broken vega-lite JS dependency
Required to fix breaking issue
Previous version of Vegas didn't pin to a fixed version of vega-lite's javascript file. This meant that a recent update of vega-lite has broken earlier version of Vegas. Vegas now pins to a fixed version of vega-lite so this shouldn't re-occur.
Also of note:
- Shorthand syntax added for Transforms:
addTransform
,filter
,filterInvalid
.