Implement UNIX version of start_sleepy_ticking
Update TODO: start_sleepy_ticking now implemented on UNIX
eventpump: initialize watcher event properly
Add missing return statement in C++ wrapper for pump::add
event (unix): implement infinite timeouts for lw_event_wait
eventpump (unix): only send watcher resume signal after checking for more events
eventpump (unix): correct stdbool usage to lw_bool
Change version to 0.5.3
issue: merger from udp/lacewing
complete merge