[Feature request] proper error message on sending

[0xBYTESHIFT]

I got this warning/error if I try to send something to an actor that doesn't have such method:

Service    | WARNING
Service    | Skip : callback
Service    | WARNING

goblin_engineer::send(addresses("service"), self(), "callback", request.session_id_,
    std::move(timestamp), std::move(timestamp_to), std::move(page), std::move(count));

It would be nice to have a more informative error, something like "actor 'service' doesn't have a callback named 'callback' "

[kotbegemot]

#76