v0.4.11

• Feature: Support resolving from default hosts file
  (#75, #76 and #77 by @clue)

  This means that resolving hosts such as localhost will now work as
  expected across all platforms with no changes required:

  $resolver->resolve('localhost')->then(function ($ip) {
      echo 'IP: ' . $ip;
  });

  The new HostsExecutor exists for advanced usage and is otherwise used
  internally for this feature.