winlose_production_line_tvt

See the description for winlose_production_line_bic for details concerning turning a battle outcome and species trait file into a reshuffled regressison file. The training-validation-test (tvt) version of this production line separates the species into a training set (battles are in the training set if both combatants are in the training species set), a validation set (battles are in the validation set if at least one combatant is in the validation species set and none are in the test species set) and a test set (battles are in the test set if at least one combatant is in the test species set). Instead of one regression files, three are thus produced.