I agree that using semantic versioning is the best approach, but would like more guidance on what constitutes major/minor/patch changes.

For example, if a clinical guideline is updated, which results in updating the corresponding CQL library, and these updates affect who does or doesn't receive recommendations (or even what the recommendations are), is that a major change because the behavior is significantly different? Or a minor change because the way you interact w/ the CQL has not changed (e.g., all the expression names are the same, etc)?

Or... if the expression names that are directly referenced in PlanDefinition have not changed, but intermediate expression names in the logic have changed, what level does that constitute (since an application could theoretically be looking at intermediate values if they are in the public access scope)?