It should be possible to create Chromosome implementations with variable size. This will effect the following chromosomes:

• AnyChromosome
• CharacterChromosome
• DoubleChromosome
• IntegerChromosome
• LongChromosome

New factory method

public static IntegerChromosome of(
    final int min,
    final int max,
    final IntRange length
);

Chromosomes created with the newInstance method will create a new chromosome with a length between the given length range.

This extension will change the serialization format (JSON and Java).