* pub sub unit test
* pub master test
* first submaster test case
* test init
* submaster conflate test
* more submaster
* all submaster except alive and valid
* fix ZMQ
* fix ZMQ for test_messaging
* single underscore
* fix key error
* more zmq sleep
* zmq needs even more sleep
* unused
* zmq sleep in submaster tests
* uids are pids
* remove fifo, go for signal
* that's more what i'm saying
* oops, that's wrong
* add some todos
* make signal poll work
* bring randomness back
* fix case in msgq when subs get evicted while polling
* check for ready messages before poll starts
* No pr builds
* use nanosleep with remainder
* this should pass the test
