!act Marked StashWhen* marker traits as internal API
=doc Move up dependency info for DurableMailboxSpec
=act #3547 Resolve high contention on unsubscribeAddresssTermination
=doc Correct typo in cluster docs
=clu #3517 Guard against wrong random selection

* When all weights in the map are zero total became 0, which is not
  valid in random pick. Treat this special case as empty WeightedRoutees, i.e.
  no availble targets and routing to deadLetters.
Merge pull request #1639 from akka/wip-durable-mb-doc-∂π

=doc Move up dependency info for DurableMailboxSpec
Merge pull request #1641 from joa/patch-1

Update cluster.rst
Merge pull request #1643 from octo47/wip-3542-no-defensive-unsubscribe

Resolves high contention on unsubscribeAddresssTermination #3547
=clu #3546 Change log level of gossip from unknown

* It is pretty normal when joining so users should not be worried
* Change to debug level
=clu #3536 Update doc of hostname port params in cluster jmx script

* This was changed in the switch to jmxsh (72aa5ef), but since
  we released with space separator I updated the documentation to that
  format.
!act #3526 Make SupervisorStrategy.logFailure public

* This change is not source compatible since anyone that has
  overridden logFailure will have compilation error
  "has weaker access privileges; it should be public"
=doc #3531 Recommend orElse’ing super.supervisorStrategy.decider
=pro #3552 Upgrade ScalaTest to 1.9.2-SNAP2 for dbuild

* This can't go into 2.2.x since ScalaTest 1.9.2-SNAP2 has source incompatible changes and the dependecy in akka-multi-node-node-testkit would force people to upgrade.
=doc Update ZeroMQ pub/sub port mismatch between doc and code example
Merge pull request #1622 from drewhk/wip-internalize-sysmsg-helper-traits-drewhk

!act Marked StashWhen* marker traits as internal API
Merge pull request #1628 from fanf/patch-4

=doc Update ZeroMQ pub/sub port mismatch between doc and code example
=rem #3555: Wrong and superfluous match in EndpointWriter
Merge pull request #1615 from drewhk/wip-wrong-match-epwriter-drewhk

=rem #3555: Wrong and superfluous pattern match in EndpointWriter
Merge pull request #1645 from akka/wip-3517-AdaptiveLoadBalancingRouter-off-by-one-patriknw

=clu #3517 Guard against wrong random selection
Merge pull request #1646 from akka/wip-3546-ignore-gossip-loglevel-patriknw

=clu #3546 Change log level of gossip from unknown