printing to stdout should obey log levels
allow IPv4 machine addresses, set default log level, separate machine connection and workspace loading
Qcmd.debug should use :debug log level
make sure Action doesn't give symbols to OSC::Message as args
improve CLI interface

* add "new" and "select" commands
* simplify send_workspace_command method 
* unify simple reply handling 
* add list of cue types
update test, make sure a default log level is set
always load workspaces after connecting machine, don't send workspace command if workspace is nil
add changelog
properly detect IP addresses, always init Qcmd::Network
version bump to 0.1.9