v1.2.0

• Feature: Optionally use ext-readline to enable raw input mode if available.
  This extension is entirely optional, but it is more efficient and reliable
  than spawning the external stty command.
  (#63 by @clue)

• Feature: Consistently return boolean success from write() and
  avoid sending unneeded control codes between writes
  (#60 by @clue)

• Deprecated: Deprecate input helpers and output helpers and
  recommend using Stdio as a normal DuplexStreamInterface instead.
  (#59 and #62 by @clue)

  // deprecated
  $stdio->on('line', function ($line) use ($stdio) {
      $stdio->writeln("input: $line");
  });
  
  // recommended alternative
  $stdio->on('data', function ($line) use ($stdio) {
      $stdio->write("input: $line");
  });

• Improve test suite by adding forward compatibility with PHPUnit 6
  (#61 by @carusogabriel)