Draw Anna/Elsa circles more nicely by turning during same frame as forward move

What do you think about this? I think it accomplishes the same thing (please double check for me) but manages to have fewer variables one needs to track:
```
function executeTuple () {

  if (api.log.length === 0) {
    return false;
  }

  do {
    // Unless something special happens, we will just execute a single tuple.
    var executeSecondTuple = false;

    var tuple = api.log[0];
    var command = tuple[0];
    var id = tuple[tuple.length-1];

    BlocklyApps.highlight(String(id));

    // Should we execute another tuple in this frame of animation?
    if (skin.consolidateTurnAndMove && checkForTurnAndMove()) {
      executeSecondTuple = true;
    }

    // We only smooth animate for Anna & Elsa, and only if there is not another tuple to be done.
    var tupleDone = Turtle.step(command, tuple.slice(1), {smoothAnimate: !executeSecondTuple});
    Turtle.display();

    if (tupleDone) {
      api.log.shift();
      clearTuple();
    }
  } while (executeSecondTuple);

  return true;
}