Added documentation about the arrow button height matching the number display height localBounds, see https://github.com/phetsims/scenery-phet/issues/513
Added documentation about the arrow button height matching the number display height localBounds, see https://github.com/phetsims/scenery-phet/issues/513

phetsims/scenery-phet,phetsims/scenery-phet,phetsims/scenery-phet