Current behavior: 
When using the List jobs API call, the workflowLevel parameter can be specified only once, so users can list jobs from one workflow step at a time. 

Requested behavior: 
Make it possible to select multiple workflow steps while listing jobs via API, by making the workflowLevel parameter behave as an array (ex: workflowLevel[]=1,2,3).

Use case:
This would make the search faster and fewer calls would be needed to list the desired jobs.