router.Query() allows to query the routes with given router.Strategy.
It uses the same logic as was implemented in flushRoutes but the code
was never updated. This way we are consistent across both router and
network packages.
* We now purge flapping routes before regular tick processes them
* Updated comments
* Record the timestamp as soon as you receive the event
* Set route Address to routing table test
* Fixed a bunch of deadlocks. Added basic Router tests.
