correct NormRMSDeviation type (#131)

johnnychen94 · ararslan · commit ba3ac885b651 · 2019-05-02T12:59:57.000-07:00
diff --git a/src/metrics.jl b/src/metrics.jl
@@ -97,7 +97,7 @@ struct SpanNormDist <: SemiMetric end
 struct MeanAbsDeviation <: Metric end
 struct MeanSqDeviation <: SemiMetric end
 struct RMSDeviation <: Metric end
-struct NormRMSDeviation <: Metric end
+struct NormRMSDeviation <: PreMetric end
 
 struct PeriodicEuclidean{W <: AbstractArray{<: Real}} <: Metric
     periods::W
