mirror new functionality in zyre

[sphaero]

see: zeromq/zyre@26417ce

[papr]

Does this include removing Zre_msg.py—since it seems to follow an deprecated protocol version (at least for incoming notifications)—and replacing it with an appropriate PyreEvent class, mirroring https://github.com/zeromq/zyre/blob/master/src/zyre_event.c?

[sphaero]

No, although it would be nice to add a PyreEvent class.

I don't understand what you mean that zre_msg follows a deprecated protocol version. Zre_msg only encodes and decodes the raw wire data. ZyreEvent is just an addition, you don't need to use it, it's just a convenience class.