Clean-up of code-base and addition of two-speed evolution. Two-speed evolution allows for evolution to proceed at two separate speeds: fast evolution (strategy evolution) and slow evolution (preference evolution). In other words, with a given small probability, a single individual drawn from the population may conditionally change her strategy or type. The type of an individual dictates her degree of morality, which is assigned during configuration. Two-speed evolution is described at length in the Operator's Manual.

A traditional best-reply function dynamic was also added, wherein an agent switches her strategy (unless mutating) to a randomly-selected strategy in the best-reply set of the population. This is also described in the Operator's Manual.