Added class-level javadocs for AnimalComponent.
Added class-level javadocs for AnimalComponentDecorator.
Added class-level javadocs for AnimalComposite.
Added class-level javadocs for Body.
Added class-level javadocs for Arms.
Added class-level javadocs for Torso.
Added class-level javadocs for Legs.
Added class-level javadocs for Head.
Added class-level javadocs for TotalWeightAdjusterDecorator.
Added class-level javadocs for WeightDecorator.