WIP: Customize episode

[bcosc]

• [ ] Change the input object
• [ ] Change the default values at the workflow level
• [ ] Add default values to existing inputs at the workflow level
• [ ] Change default value at the Workflow step level
• [ ] Add hard coded values (via default or valueFrom) at the Workflow step level
• [ ] Change hard coded values at the Workflow step level
• [ ] Change default values in the CLT description
• [ ] Change hard coded values in the CLT description
• [ ] Change the container (add helper script)
• [ ] Change the tool source itself

Working on the customize episode!

[mr-c]

eventual goal of this lesson, to learn both HOW to make changes at each level, but also WHEN and WHY

[mr-c]

TODO: move to intermediate lesson; include the checklist from the 1st comment

[mr-c]

Moved to https://github.com/common-workflow-lab/cwl-intermediate-tutorial/pull/2