message: remove AvatarItem-more class
diff: @@ -6,11 +6,9 @@ import {get, COMMON} from './constants'
  import theme from './theme'
  const transformChildren = children => {
  - const count = children.length
  return React.Children.map(children, (child, index) => {
  return (
  <>
  - {count > 3 && index === 2 && <div className="AvatarItem-more AvatarItem" />}
  {React.cloneElement(child, {className: 'AvatarItem'})}
  </>
  )
  @@ -139,8 +137,9 @@ const AvatarStackBody = styled.span`
  `}
  `
  const AvatarStack = ({children = [], alignRight, ...rest}) => {
  + count = children.length
  return (
  - <AvatarStackWrapper count={children.length} {...rest}>
  + <AvatarStackWrapper count={count} className={count === 2 ? 'AvatarStack--two' : count > 2 ? 'AvatarStack--three-plus' : ''} {...rest}>
  <AvatarStackBody alignRight={alignRight} className="AvatarStackBody">
  {transformChildren(children)}
  </AvatarStackBody>
  