Move fitness to selector
Tournament selector
Test files renaming
Statistics aggregator
RouletteWheelRankWeightingSelector
Added plotting
Plotter completed
Added simple optimizer
Added plot examples
MinCostAge -> GenerationsWithoutImprovements
Ordered chromosome, crossover, mutator.
Added tsp example
Another order crossover
Added position crossover
Added partially mapped crossover
Extracted chooseTwoPointCrossSection
Multi point crossover refactored
go fmt. Multi point crossover test.
Added OptimizerAggregator
Statistics refactoring.