HIDDEN FEATURES 
      Press this key              Get this result
      "r"                         -random sized paddle
      "w"                         -turn wave animation on and off
      "e"                         -make it easy
      "h"                         -make it hard, (default)
      "1-9"                       -move the paddle up and down
      "s"                         -ball goes straight through bricks
  
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