Refactor: 1) Separate TransitionFn & OutputFn

[juancarrey]

Separate into TransitionFn & OutputFn

DFSM has noop OutputFn

Handle returns still StateMachine

const void = createVoidMachine('A', 
  [
    ['A', '1', 'B'],
    ['A', '2', 'B'],
    ['B', '1', 'A'],
    ['B', '2', 'A'],
  ]
);

const mealy = createMealy('A', 
  [
    ['A', '1', 'B', '0'],
    ['A', '2', 'B', '1'],
    ['B', '1', 'A', '1'],
    ['B', '2', 'A', '2'],
  ]
);

const moore = createMoore('A', 
  [
    ['A', '1', 'B'],
    ['A', '2', 'B'],
    ['B', '1', 'A'],
    ['B', '2', 'A'],
  ],
  { 'A': 1, 'B': 0 }
);