Log Message:
version 4.2.2:
* Improve compatibility with GNU Hurd
* Fixed 2286 - improve CMake on Windows documentation
* Fixed 1235 - improved compatibility with mingw64
* Improve zmq_proxy documentation to state it can return ETERM as well
* Fixed 1442 - SO_NOSIGPIPE and connection closing by peer race condition
* Improve CMake functionality on Windows: ZeroMQConfig.cmake generation CPack
  option, correct static library filename, ship FindSodium.cmake in tarball
* Fixed 2228 - setting HWM after connect on inproc transport leads to infinite
  HWM
* Add support for Visual Studio 2017
* New DRAFT (see NEWS for 4.2.0) zmq_has option "draft" option that returns
  true if the library was built with DRAFT enabled. Useful for FFI bindings.
  See doc/zmq_has.txt for more information
* Fixed 2321 - zmq_z85_decode does not validate its input. The function has
  been fixed to correctly follow RFC32 and return NULL if the input is invalid
* Fixed 2323 - clock_t related crash on Apple iOS 9.3.2 and 9.3.5
* Fixed 1801 - OSX: Cmake installs libzmq in a weird PATH
* Fixed potential divide by zero in zmq::lb_t::sendpipe
* Improve compatibility with OpenIndiana by skipping epoll and using poll/select
* Fix IPv4-in-IPv6 mapped addresses parsing error