I fixed a bug in the loop, so we started another rank test run. Run details in the attached file.

The bug was searching for the generationDNA.csv file in the wrong place, meaning that it wasn't able to copy it to the run directory. That meant we didn't have a record of the generation data in the usual format. I don't think that this explains the flatness, since the the generationDNA.csv file was still created every generation correctly, so the GA knew where it was. But this test now corrects that problem and tests the usage of the rank selection method.