function pug_attrs(obj, terse) {
  var attrs = '';

  for (var key in obj) {
    if (pug_has_own_property.call(obj, key)) {
      var val = obj[key];

      if ('class' === key) {
        val = pug_classes(val);
        attrs = pug_attr(key, val, false, terse) + attrs;
        continue;
      }
      if ('style' === key) {
        val = pug_style(val);
      }
      attrs += pug_attr(key, val, false, terse);
    }
  }

  return attrs;
}
Render the given attributes object.

@param {Object} obj
@param {Object} terse whether to use HTML5 terse boolean attributes
@return {String}