deepDiffArray()function

deepDiffArray(left: ImmutableArray, right: R): R | typeof SAME

Param	Type
`left`	`ImmutableArray`	The old array. required
`right`	`R`	The new/target array. required

Return
`R \| typeof SAME`	The `right` array if it is different to `left`, or the exact `SAME` constant otherwise. - If the two values are deeply equal the `SAME` constant is returned.

Diff two arrays to produce the transformation needed to transform left into right
DH: Currently arrays don't diff at an item level, they return the entire new array if not deeply equal.