Release 3.3.3

Fixed

• Fixed class and style failing to type-check on <FontAwesomeIcon> in JSX/TSX, a regression from
  #576. FontAwesomeIcon is declared as a FunctionalComponent, whose JSX attribute surface resolves
  from the component's own props only; the declaration now also intersects AllowedComponentProps and
  VNodeProps, restoring class, style, key, and ref. Types-only and non-breaking.

Changed

• CI: the public API type-check now runs against the oldest supported Vue (3.0.x) as well as the newest,
  so type-only regressions that depend on a helper only newer Vue versions export are caught
• Removed the unused npm and install devDependencies. Development-only; the published package is
  unchanged.