Rework of node / individual to remove strange "None" node idea
Rework of node / individual to remove strange "None" node idea

brianwgoldman/ReducingWastedEvaluationsCGP,ltyscu/ReducingWastedEvaluationsCGP,brianwgoldman/Analysis-of-CGPs-Mechanisms,brianwgoldman/Analysis-of-CGPs-Mechanisms,brianwgoldman/LengthBiasCGP,brianwgoldman/cgp,ltyscu/Analysis-of-CGPs-Mechanisms,brianwgoldman/cgp,ltyscu/Analysis-of-CGPs-Mechanisms