Traits¶ ↑

A Trait is a group of parameters that can be expressed     
as a group more than one time.  Traits save a genetic      
algorithm from having to search vast parameter landscapes  
on every node.  Instead, each node can simply point to a trait 
and those traits can evolve on their own. (Taken from the C version of NEAT)

Since we wish to allow for different classes of Neurons, this trait idea is
super, since all we need to do is have a different trait species for the
different node types.