+ Props creation with nulls does not fail any longer
+ null values are now serialised properly and can be used in remote
deployments too
+ added tests for Reflect.findConstructor
> does not change wire protocol, so that's open for discussion (if we
> want it to be more like SerialisedMessage or not)
Resolves#13946
- rewrite deprecated usages to their recommended counterparts
- TestActorRef now verifies mailbox requirements
- CallingThreadMailbox now exposes proper messageQueue type for
inspection