afanasy: delete copy and move operators of af::Msg
While debugging, I accidentally used the copy assignment in a test which lead me down completely wrong rabbit hole. Deleting them explicitely will throw compile errors in case they are being used somewhere.
We use only those constructors and operators, that a implemented. Debugging such a complex program is not a good approach. The best way it to catch a bug. ps If there are any errors in such mature classes it should not work at all. And it works in many companies 24/7. You just faced some job that cause special bug.
This has nothing to do with any bug, it's just code improvements that make it easier to work on the cgru code.