[WIP] Pure-Go implementation of ZeroMQ-4
CI
github action by @bartekpacia in https://github.com/go-zeromq/zmq4/pull/137
Full Changelog: https://github.com/go-zeromq/zmq4/compare/v0.15.0...v0.16.0
Full Changelog: https://github.com/go-zeromq/zmq4/compare/v0.14.1...v0.15.0