Allow retrieval of original measurement data from MeasurementModel through Qt::UserRole

src/typica.w

 to the user, but they will request the edit role if the user attempts to modify
 the data through a view.
 
+As of version 1.6, |Qt::UserRole| allows retrieval of raw measurement data.
+
 @<MeasurementModel Implementation@>=
 QVariant MeasurementModel::data(const QModelIndex &index, int role) const@/
 {@/
 	{
 		return QVariant();
 	}
+	if(role == Qt::UserRole)
+	{
+		return QVariant(row->at(column));
+	}
 	if(role == Qt::DisplayRole || role == Qt::EditRole)
 	{
 		MeasurementList *row = entries->at(index.row());