message: Fixes stderr of process spawned by Server Options function is not appended to output channel
diff: @@ -164,6 +164,7 @@ export class LanguageClient extends BaseLanguageClient {
  return { reader: new StreamMessageReader(info.reader), writer: new StreamMessageWriter(info.writer) };
  } else {
  let cp = result as ChildProcess;
  + cp.stderr.on('data', data => this.outputChannel.append(is.string(data) ? data : data.toString(encoding)));
  return { reader: new StreamMessageReader(cp.stdout), writer: new StreamMessageWriter(cp.stdin) };
  }
  });
  