Problem: No logging if zsys is not initialized
Problem: No logging if zsys is not initialized

Solution: Take care to initialize zsys before performing logging. This
is a lot more intuitive for new users because this issue can be quite
hard to figure out.

zeromq/czmq,zeromq/czmq,zeromq/czmq,opedroso/czmq,opedroso/czmq,zeromq/czmq,opedroso/czmq,opedroso/czmq,zeromq/czmq,opedroso/czmq,zeromq/czmq,opedroso/czmq,opedroso/czmq,zeromq/czmq,opedroso/czmq,opedroso/czmq,zeromq/czmq