Replace random key genetic algorithm with biased random key genetic algorithm #3

The package currently implements a random key genetic algorithm (RKGA) for solving permutation optimizations such as Flow-Shop Scheduling and Traveling Salesman.

I'm planning to enhance the algorithm and slightly change the optimizer by introducing new steps.

• Introducing new partition of population (elites + mutants + offspring)
• Introducing biased uniform crossover
• And other required steps to transform a RKGA into BRKGA.