This class extends the basic Animation class for composite animations (animations built of other animations). It adds an instance variable for the component child animations, and a method for adding them to this collection.

	management
	prologue:

	private
	getComponents scaleDuration:

	reversing
	reverseDirection

	initialization	top
	append: Adds a child animation to the composite animation.
	initialize Creates an empty OrderedCollection for the child animations.

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	prologue: comment stating purpose of message

	private	top
	getComponents Return the component animations of the sequential animation
	scaleDuration: Scales the animation's duration by the specified amount

	reversing	top
	reverseDirection Changes the direction an animation runs in (forward or in reverse)

	initialization	top
	new Creates a new Composite animation and makes sure it gets initialized.