v0.3.0-beta.4

Features

• Icon: added icon component for using included or custom icons (741b6e5)
• icons: added ChevronDown and RotateRight icons (af137c6)
• ToolButton: added expandProps for expandable menu button (a65a7e3)

Bug Fixes

• Thumbnail: fixed issue with keys not registering on tool buttons (e24afb5)