/// <summary>
/// Executes a command, placing it on the stack. This empties the Redo stack, losing those commands permanently. This function does not check if a command
/// can be done, so all code using the CommandStack should call CanBeDone() on the command before passing it to the CommandStack.
/// </summary>
/// <param name="command"></param>
public void ExecuteCommand(MapEditorCommand command)
{
command.Do();
done.Push(command);
undone.Clear();
}