Interaction Application Switching

[alistairjevans]

We need to be able to switch 'application' during a test, so we can maintain two different interaction behaviours at the same time.

I imagine that this will require:

• An application marker in each file (like a namespace).

  
  # general button rule
  Component: button

Application: app-id

specific to the app-id application.

Component: button

- Multiple built interaction sets by the project compiler.
- A built-in step that allows a test to change application.
- Contextual linking that understands that the interaction set has changed and a different one should be used.