constant near keys should be able to be set on containers

[alixander]

as long as nothing within is connected to anything outside

direction: right

x -> y: {
  style.stroke: green
}

y -> z: {
  style.stroke: red
}

legend: {
  # This is the TODO
  near: bottom-center
  color1: foo {
    shape: text
    style.font-color: green
  }

  color2: bar {
    shape: text
    style.font-color: red
  }
}