Improvements

• #323: Fix leaky abstraction of CompositeCodec.
• #434: Rewrite build scripts using Kotlin.
• #695: Simplify MOEA for continious optimization.
• #704: Add FlatTreeNode.ofTree factory method, for cleaner Tree API.
• #706: The Constraint is now part of the Problem interface. If defined, it will automatically be part of the created Engine.

default Optional<Constraint<G, C>> constraint() {
    return Optional.empty();
}

• #708: Additional Chromosome.map(Function) methods. This allows a more efficient mapping of chromosomes.
• #731: Improve creation of constrained individuals, as defined in the Constraint interface.
• #739: Add jenetics.incubator module. This module will contain classes which might be part of one of the main module.

Bugs

• #700: GaussianMutator violates the DoubleGene's upper bound.
• #707: Fix conversion of BitChromosome <-> BitSet.