message: athena.paxos.Server: Actually take the initial value into account.
diff: @@ -251,7 +251,7 @@ namespace elle
  elle::Version version)
  : _id(std::move(id))
  , _quorum(quorum)
  - , _value()
  + , _value(std::move(value))
  , _version(version)
  , _partial(false)
  , _state()
  