akka/akka — pull request #536 by patriknw (2012-06-12 14:18:33+00:00)
Title: Fix false convergence when singleton cluster, see #2222

* All members must be in seen table for convergence
* Add extra debug logging due to convergence issues
* Enable test of convergence for node joining singleton cluster
* Rename + operator of VectorClock and Versioned to :+
+ is kind of reserved for string concatination