2.0.0-beta2

• We're making a small deviation from React Core's controlled vs. uncontrolled scheme; for convenience,
  <Draggable>s with a position property will still be draggable, but will revert to their old position
  on drag stop. Attach an onStop or onDrag handler to synchronize state.
  • A warning has been added informing users of this. If you make <Draggable> controlled but attach no callback
    handlers, a warning will be printed.