NSString+JaroWinkler addition for computing string edit distances
GCString(GCSimilarityAdditions) use NSString+JaroWinkler
Fixed similarity calculation when inequal count of properties of same type
GCNumber (GCSimilarityAdditions)
More detailed GCSimilarityTests
GCAge: totalDays
GCAge ageFromDate:toDate: now calculates absolute ages
GCAge (GCSimilarityAdditions)
GCDate (GCSimilarityAdditions)