Fix old version pyzmq compatibility issue
Fix old version pyzmq compatibility issue

arokem/python-matlab-bridge,arokem/python-matlab-bridge,blink1073/python-matlab-bridge,blink1073/python-matlab-bridge,blink1073/python-matlab-bridge,jjangsangy/python-matlab-bridge,jjangsangy/python-matlab-bridge,arokem/python-matlab-bridge,jjangsangy/python-matlab-bridge