Tween balls in a Plinko board — tween

Adds tweening frames to the animation of ball positions in a Plinko board.

tween_balls(board, frame_mult, ease = "bounce-out")

Arguments

board	A `plinko_board()` object
frame_mult	The number of frames to add per existing frame in the animation. 4 tends to be a good number.
ease	The easing function to use. See `tweenr::display_ease()` for examples.

A modifed plinko_board() with tweened frames added.