code: function getSize(element) {
    var offset = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
  
    return {
      width: getWidth(element, offset),
      height: getHeight(element, offset)
    };
  }
docs: Get element's size in pixels.
  @param {(string|Array|NodeList|HTMLCollection|Element|HTMLElement)} element - The element. Note that it'll be passed to getElement to ensure there's only one.
  @param {boolean} [offset=false] - If true size will include scrollbar and borders.
  @return {number} size - The size in pixels.
  @example //esnext
  import { append, setStyleProp, getSize } from 'chirashi'
  append(document.body, '.maki')
  const maki = setStyleProp('.maki', {
  display: 'block',
  border: '20px solid red',
  padding: 10,
  height: 200,
  width: 200
  })
  getSize(maki, true) //returns: { width: 260, height: 260 }
  getSize(maki) //returns: { width: 220, height: 220 }
  @example //es5
  Chirashi.append(document.body, '.maki')
  var maki = Chirashi.setStyleProp('.maki', {
  display: 'block',
  border: '20px solid red',
  padding: 10,
  height: 200,
  width: 200
  })
  Chirashi.getSize(maki, true) //returns: { width: 260, height: 260 }
  Chirashi.getSize(maki) //returns: { width: 220, height: 220 }