* Add peer lifetime feature for PeerInfo.
Refactor peerinfo to use openarrays instead of sequences.
Fix tests and examples to use arrays instead of sequences.
* Add access to lifetime Future[T] itself.
* Bugfix: Dialing an already connected peer may lead to crash
* Introduced a standard_setup module allowing to instantiate
the `Switch` object in an easier manner.
* Added `Switch.disconnect(peer)`
* Trailing space removed (sorry about polluting the diff)
Eugene Kabanov
Dmitriy Ryajov
Zahary Karadjov