Execute hypotheses on workflow changes

[hvarg]

A hypothesis should be executed when the line of inquiry that triggers it changes the workflow. This can happen in two cases:

1. Workflow changes in WINGS internally (We need some kind of version number for this)
2. LOI changes workflow bindings. In this case we should archive the old LOI and create a new one with new executions.

[hvarg]

requires KnowledgeCaptureAndDiscovery/wings#146