Version 2.2.0

Enhancements

• better handling of datetimes and timezones (#1053)

• all inline datasets are now converted to named datasets and stored at the
  top level of the chart. This behavior can be disabled by setting
  alt.data_transformers.consolidate_datasets = False (#951 & #1046)

• more streamlined shorthand syntax for window transforms (#957)

Maintenance

• update from Vega-Lite 2.4.3 to Vega-Lite 2.6.0; see vega-lite change-logs 2.5.0 2.5.1 2.5.2 2.6.0

Backward-incompatible changes

• alt.SortField renamed to alt.EncodingSortField and
  alt.WindowSortField renamed to alt.SortField (#923)

Bug Fixes

• Fixed serialization of logical operands on selections within
  transform_filter(): (#1075)

• Fixed sphinx issue which embedded chart specs twice (#1088)

• Avoid Selenium import until it is actually needed (#982)