Sort hierarchy tree by $orderColumn
Test cases for Ordered Scoped Trees.
Merge branch 'feature/sorted-hierarchy-tree' of https://github.com/ignaciogc/baum into ignaciogc-feature/sorted-hierarchy-tree
Use custome assertion to test for array equality.
Merge branch 'ignaciogc-feature/sorted-hierarchy-tree' into develop
Update CHANGELOG.
Update CHANGELOG & bump version.