The add(), remove(), setParent(), bind() and setData() methods in the Form class now throw an exception if the form is already bound.

[Paweł Wacławczyk]

• The add(), remove(), setParent(), bind() and setData() methods in
  the Form class now throw an exception if the form is already bound.

  If you used these methods on bound forms, you should consider moving your
  logic to an event listener that observes FormEvents::PRE_BIND or
  FormEvents::BIND.