v0.8.4

• Feature: Add FixedUriConnector decorator to use fixed, preconfigured URI instead
  (#117 by @clue)

  This can be useful for consumers that do not support certain URIs, such as
  when you want to explicitly connect to a Unix domain socket (UDS) path
  instead of connecting to a default address assumed by an higher-level API:

  $connector = new FixedUriConnector(
      'unix:///var/run/docker.sock',
      new UnixConnector($loop)
  );
  
  // destination will be ignored, actually connects to Unix domain socket
  $promise = $connector->connect('localhost:80');