Update Workflow

[sroussey]

const workflow = new Workflow()
  .add(new FetchData())
  .map([new TransformData(), new BackupData()]) // Runs both in parallel
  .reduce(new SaveToDatabase()); // Merges both outputs

await workflow.run();

If I did this, could get away from always using ArrayTask, and only using it for reduce().

reduce strategies:

• array: assumes inputs and outputs are the same, and will turn them into arrays
• object_by_id: create an object where the id is the key
• object_by_type: create an object where the key is the task type (create arrays if duplicate task types or error?)
• entries_by_id: return an array [id, results],[id2, results]
• entries_by_type