Updated changelog for release

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