raised the sphere colliders on the mushroom bumpers to be at the same height as the balls midpoint. this means the top collider can be raised to the height of the surrounding walls, like a glass cover, and the rail entry exit collider system can be got rid of
add some force to the ball when it hits a bumper.
tweaked physics on walls
toggleswitches now change materials when they change state
changed the flipper to use the hingejoints limit for its maxangle
tidy up the messages with constants