Update child repos to PSR-4 for git subs-plit
Update child repos to PSR-4 for git subs-plit

clue-labs/event-loop,reactphp/event-loop,mkrauser/event-loop,kaduev13/event-loop,steverhoades/event-loop,kaduev13/event-loop,mkrauser/event-loop,steverhoades/event-loop