viztest-make-diff-template.md
In VizTest: Optimal Confidence Intervals for Visual Testing

make_diff_template returns well-formed object

      Larger   Smaller
1  sunflower    casein
2  sunflower  meatmeal
3  sunflower   soybean
4  sunflower   linseed
5  sunflower horsebean
6     casein  meatmeal
7     casein   soybean
8     casein   linseed
9     casein horsebean
10  meatmeal   soybean
11  meatmeal   linseed
12  meatmeal horsebean
13   soybean   linseed
14   soybean horsebean
15   linseed horsebean