message: update to 1px instead of 2 for AvatarStack
diff: @@ -34,7 +34,7 @@ const alignRightStyles = theme => {
  .AvatarItem {
  margin-right: 0;
  margin-left: -11px;
  - box-shadow: 0 0 0 2px ${get('colors.white')};
  + box-shadow: 0 0 0 1px ${get('colors.white')};
  }
  `
  }
  @@ -88,7 +88,7 @@ const AvatarStackBody = styled.span`
  box-sizing: content-box;
  margin-right: -11px;
  background-color: ${get('colors.white')};
  - box-shadow: 0 0 0 2px ${get('colors.white')};
  + box-shadow: 0 0 0 1px ${get('colors.white')};
  border-radius: ${props => getBorderRadius(props)};
  transition: margin 0.1s ease-in-out;
  @@ -125,7 +125,7 @@ const AvatarStackBody = styled.span`
  height: 20px;
  content: '';
  border-radius: ${props => getBorderRadius(props)};
  - box-shadow: 0 0 0 2px ${get('colors.white')};;
  + box-shadow: 0 0 0 1px ${get('colors.white')};
  }
  &::before {
  