Merge branch 'refs/heads/standalone'

[stream] Don't emit data if empty. Replaced py test with php

[Streams] Reset non-blocking to be safe

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

[EventLoop][LibEv] Let stream remove event listener

Describing how to change the host the socket is listening on.

Support listening on IPv6 addresses

Remove all listeners from socket server on shutdown

Adjust event docs to use fake docblocks

Fix branch aliases of subtree splits to be 0.2-dev