Fix spatial property precedence (#86).
Fix support for chained dependencies (#87).
Fix for lack of 'output' parameter in 'cross' transform and test cases
Fix pre-computed values for symbol bounds (#91).
Resolve merge conflicts on #90.
Merge pull request #92 from trifacta/v1.3.1

Merge v1.3.1 with Master
Increment semver.
Increment semver.
Fix arc bounds error (#88).
Bump version number.
Fix spatial property precedence, for real (#86).
Update D3 version; expose spec in editor.
Add baseURL support for XHR loading.
Update stack transform to handle empty data.
Fix group mark picking order.
Add baseURL support for image loading.
Refactor examples directory.
Add interactive jobs example.
Merge pull request #98 from trifacta/v1.3.2

v1.3.2
Update group lookup. Expose transform array.