message: fix(typescript): Make `Group` props optionals
diff: @@ -7,8 +7,8 @@ import Box, { BoxProps } from "../Box";
  import GroupItem from "./GroupItem";
  export interface GroupProps extends BoxProps {
  - vertical: boolean;
  - verticalAt: number;
  + vertical?: boolean;
  + verticalAt?: number;
  }
  const groupItemSelector = getSelector(GroupItem);
  