Keyboard

Support repeat key event generation.
That is, multiple keystroke when keys are held down.
Will fund.

@pbourke: The existing Receive Keyboard Buttons node has a repeatWhenHeld port. When it’s true, the pressed trigger port fires repeatedly at a rate determined by the system-wide keyboard repeat rate setting. The Receive Keyboard Typing node respects the system-wide keyboard repeat rate setting, too.

Excellent!