Macro track_periodic_value_change_counts 

macro_rules! track_periodic_value_change_counts {
    ($context:expr, $entity:ty, $property:ty, [$($stratum:ty),* $(,)?], $period:expr, $handler:expr $(,)?) => { ... };
    ($context:expr, $entity:ty, $property:ty, $period:expr, $handler:expr $(,)?) => { ... };
}

Tracks periodic value change counts with concise entity, property, and strata syntax.

The strata list is optional. Omitting it, or passing [], uses the empty property list ().

track_periodic_value_change_counts!(
    context,
    Person,
    InfectionStatus,
    1.0,
    handle_incidence_tracking
);

track_periodic_value_change_counts!(
    context,
    Person,
    InfectionStatus,
    [Age],
    1.0,
    move |_context, counter| {
        let _ = counter;
    }
);

track_periodic_value_change_counts!(
    context,
    Person,
    InfectionStatus,
    [Age, HighRisk],
    1.0,
    handle_incidence_tracking
);