STU3#69: Clarified date/time equality and equivalence semantics. STU3#211: Clarified precision semantics for date/time comparisons. STU3#219: Changed date/time equality and equivalence semantics to compare to the finest specified precision of either input. STU3#220: Changed tuple/object equality and equivalence behavior to only compare values present. STU3#221: Change list membership and duplicate detection semantics to use equality rather than equivalence throughout.
STU3#69: Clarified date/time equality and equivalence semantics.
STU3#211: Clarified precision semantics for date/time comparisons.
STU3#219: Changed date/time equality and equivalence semantics to compare to the finest specified precision of either input.
STU3#220: Changed tuple/object equality and equivalence behavior to only compare values present.
STU3#221: Change list membership and duplicate detection semantics to use equality rather than equivalence throughout.

cqframework/clinical_quality_language,cqframework/clinical_quality_language