Added a pending test for transitioning to a # state
Added a pending test for transitioning to a # state

transitioning from #machine.ping.foo to #machine.ping.bar and to bar
should yield the same results.  This test exposes that it doesn't: It
actually enters the states (ping) that it's already in.

davidkpiano/xstate,davidkpiano/estado,davidkpiano/xstate,davidkpiano/xstate