version agnostic Perl bindings for zeromq using ffi

 ZMQ::FFI exposes a high level, transparent, OO interface to zeromq
 independent of the underlying libzmq version. Where semantics differ, it will
 dispatch to the appropriate backend for you. As it uses ffi, there is no
 dependency on XS or compilation. As of 1.00 ZMQ::FFI is implemented using
 FFI::Platypus.