Added function to clamp data to a certain range

clamp.m

+function RefSet = clamp(RefSet,varargin)
+%CLAMP Summary of this function goes here
+%   Detailed explanation goes here
+
+numLab = numel(RefSet);
+
+for lab = 1:numLab
+    RefSet(lab).Color = utils.clamp(RefSet(lab).Color,varargin{:});
+end
+
+end
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