Simplified the zmq_event_t structure for easier access and better usability towards language bindings.
Merge pull request #527 from guidog/master

Simplified zmq_event_t structure.
Changed message structure for event notifications.
Merge pull request #528 from guidog/master

Changed message structure for event notifications
Adapted man page to API.
Merge pull request #529 from guidog/master

Adapted zmq_socket_monitor man page to new API.
Merge branch 'master' into tls
Introduce a ZMQ_TLS_CERT_COMMON_NAME socket option