Generate a population given a function to create genomes.

Arguments:

• new_genome - A function or callable object that will return a genome that can be used for a new organism. This new genome should be a MutableSeq object with a specified alphabet.
• num_organisms - The number of individuals we want in the population.
• fitness_calculator — A function that will calculate the fitness of the organism when given the organisms genome.

Generate a population of individuals with randomly set genomes.

Arguments:

• genome_alphabet — An Alphabet object describing all of the possible letters that could potentially be in the genome of an organism.
• genome_size — The size of each organisms genome.
• num_organism — The number of organisms we want in the population.
• fitness_calculator — A function that will calculate the fitness of the organism when given the organisms genome.