Position by bottom

There is no posibility to position dd by bottom, but if modify code like below, it works
const ignoredStyleAttrs = [
  'top',
  'left',
  'right',
  'width',
  'height',
  'bottom'
]

and add 
      if (positions.style.bottom !== undefined) {
        changes.bottom = `${positions.style.bottom}px`
      }

in applyReposition