addd wait_for_message
added send_dontwait
Merge branch 'master' of devbox.vpn.validad.net:ZMQx-Class
new_context, context

new_context really returns a new context on every call, whereas context
returns a probably cached context.
use zmq_msg_send instead of zmq_sendmsg
Merge branch 'master' of devbox.vpn.validad.net:ZMQx-Class
added get_sockopt helper methods
added tests for set/get sockopt
added tests
gitignore cover_db