React event loop v1

Update react/event-loop from ^0.4 to ^1.0 (#1)

* Update react/event-loop from ^0.4 to ^1.0

- Replace $timer->cancel() with $loop->cancelTimer($timer)
- Replace $loop->nextTick() with $loop->futureTick()
- added workaround to run() - make sure callback is called with $loop argument

* Update react/event-loop from ^0.4 to ^1.0

- Update React\EventLoop\Timer\TimerInterface to React\EventLoop\TimerInterface

Usable, so lets fix it!

v0.1.0

Cosmetic changes