Support for deadline, lifespan and liveliness qos#88

Merged

eboasson merged 3 commits intoros2:masterfrom dpotman:events

Jan 31, 2020

+215-72

Commits on Jan 20, 2020

Events and liveliness/lifespan/deadline qos support
dpotman
committed

Commits on Jan 21, 2020

Removed redundant empty check in rmw_wait, fix duration 0 vs infinity for qos getter and setter
dpotman
committed

Commits on Jan 28, 2020

Disabled auto-dispose so that deadline-missed on reader is still triggered when a writer becomes not-alive and unregisters itself
dpotman
committed