Window getMaximumSize and getMinimumSize return array instead of object

[andy-lee-eng]

Window.getBounds() returns a Promise for a Rectangle (top, left, width, height), but the functions getMaximumSize() and getMinimumSize() both return a 2-value array instead.

They should probably return a Size (width, height) instead.

[andy-lee-eng]

getPosition and getSize also return an array of numbers instead of position/size objects

[andy-lee-eng]

In fact getPosition and getSize are a bit redundant when getBounds includes all the same information.