message: Missed unset's return type
diff: @@ -330,7 +330,7 @@ declare namespace interact {
  set ( options: any ) : Interactable
  styleCursor ( yesno: boolean ) : Interactable
  test ( x : SnapFunction ) : any
  - unset(): void
  + unset(): Interactable
  }
  interface InteractOptions {
  