message: SimpleCell: supported Avatar size="28"; Avatar: Readme updated
diff: .SimpleCell > .Icon:first-child,
  .SimpleCell > .Tappable__waves + .Icon,
  -.SimpleCell > .Avatar--sz-32 {
  +.SimpleCell > .Avatar--sz-32,
  +.SimpleCell > .Avatar--sz-28 {
  padding: 10px 16px;
  }
  padding: 6px 12px;
  }
  -.SimpleCell > .Avatar:not(.Avatar--sz-32) ~ .SimpleCell__main .SimpleCell__description {
  - margin-top: 3px;
  -}
  -
  .SimpleCell__description {
  color: var(--text_secondary);
  text-overflow: ellipsis;
  overflow: hidden;
  font-size: 13px;
  line-height: 16px;
  + margin-top: 3px;
  +}
  +
  +.SimpleCell > .Avatar--sz-32 ~ .SimpleCell__main .SimpleCell__description,
  +.SimpleCell > .Avatar--sz-28 ~ .SimpleCell__main .SimpleCell__description {
  margin-top: 2px;
  }
  