Binds an element layout variable (the options are the same as the fields in ElemProps) to an observable.
Templates
template bindProp[T](prop: typed; observable: Observable[T]): untyped
template bindCollection[T](prop: seq[T]; collection: ObservableCollection[T]): untyped
template bindLayoutProp[T](element: Element; prop: untyped; observable: Observable[T]): untyped