Return true if all tweens in the group are not paused or playing.
Optionaltime: numberDeprecatedThe preserve parameter is now defaulted to true and will
be removed in a future major release, at which point all tweens of a
group will always be preserved when calling update. To migrate, always
use group.add(tween) or group.remove(tween) to manually add or remove
tweens, and do not rely on tweens being automatically added or removed.
Optionaltime: numberOptionalpreserve: boolean
Controlling groups of tweens
Using the TWEEN singleton to manage your tweens can cause issues in large apps with many components. In these cases, you may want to create your own smaller groups of tween