Introduce a mutex class, as stepping stone to dialing back overuse of yarp::os::Semaphore
stubs
add stub for Node + Nodes
add stub test
add mutex
basic store of contactables in node
add auto-generated node ports
stubs for slave api
basic type propagation
switching over to use of real nodes
support same # syntax in yarp proper
broken, transitional
make yarpserver3 available in harness_os, for testing
prepare to determining direction and type prior to topic connection
better support usage without explicit port names
use directions when committed
pull out some common variables
basic topic direction test
add multi-multi connection test
parallel reads