text: diff --git a/lib/util.js b/lib/util.js
  index a03e874..9074e8e 100644
  --- a/lib/util.js
  +++ b/lib/util.js
  @@ -19,430 +19,6 @@
   // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
   // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  -var formatRegExp = /%[sdj%]/g;
  -exports.format = function(f) {
  -  if (!isString(f)) {
  -    var objects = [];
  -    for (var i = 0; i < arguments.length; i++) {
  -      objects.push(inspect(arguments[i]));
  -    }
  -    return objects.join(' ');
  -  }
  -
  -  var i = 1;
  -  var args = arguments;
  -  var len = args.length;
  -  var str = String(f).replace(formatRegExp, function(x) {
  -    if (x === '%%') return '%';
  -    if (i >= len) return x;
  -    switch (x) {
  -      case '%s': return String(args[i++]);
  -      case '%d': return Number(args[i++]);
  -      case '%j':
  -        try {
  -          return JSON.stringify(args[i++]);
  -        } catch (_) {
  -          return '[Circular]';
  -        }
  -      default:
  -        return x;
  -    }
  -  });
  -  for (var x = args[i]; i < len; x = args[++i]) {
  -    if (isNull(x) || !isObject(x)) {
  -      str += ' ' + x;
  -    } else {
  -      str += ' ' + inspect(x);
  -    }
  -  }
  -  return str;
  -};
  -
  -
  -// Mark that a method should not be used.
  -// Returns a modified function which warns once by default.
  -// If --no-deprecation is set, then it is a no-op.
  -exports.deprecate = function(fn, msg) {
  -  // Allow for deprecating things in the process of starting up.
  -  if (isUndefined(global.process)) {
  -    return function() {
  -      return exports.deprecate(fn, msg).apply(this, arguments);
  -    };
  -  }
  -
  -  if (process.noDeprecation === true) {
  -    return fn;
  -  }
  -
  -  var warned = false;
  -  function deprecated() {
  -    if (!warned) {
  -      if (process.throwDeprecation) {
  -        throw new Error(msg);
  -      } else if (process.traceDeprecation) {
  -        console.trace(msg);
  -      } else {
  -        console.error(msg);
  -      }
  -      warned = true;
  -    }
  -    return fn.apply(this, arguments);
  -  }
  -
  -  return deprecated;
  -};
  -
  -
  -var debugs = {};
  -var debugEnviron;
  -exports.debuglog = function(set) {
  -  if (isUndefined(debugEnviron))
  -    debugEnviron = process.env.NODE_DEBUG || '';
  -  set = set.toUpperCase();
  -  if (!debugs[set]) {
  -    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
  -      var pid = process.pid;
  -      debugs[set] = function() {
  -        var msg = exports.format.apply(exports, arguments);
  -        console.error('%s %d: %s', set, pid, msg);
  -      };
  -    } else {
  -      debugs[set] = function() {};
  -    }
  -  }
  -  return debugs[set];
  -};
  -
  -
  -/**
  - * Echos the value of a value. Trys to print the value out
  - * in the best way possible given the different types.
  - *
  - * @param {Object} obj The object to print out.
  - * @param {Object} opts Optional options object that alters the output.
  - */
  -/* legacy: obj, showHidden, depth, colors*/
  -function inspect(obj, opts) {
  -  // default options
  -  var ctx = {
  -    seen: [],
  -    stylize: stylizeNoColor
  -  };
  -  // legacy...
  -  if (arguments.length >= 3) ctx.depth = arguments[2];
  -  if (arguments.length >= 4) ctx.colors = arguments[3];
  -  if (isBoolean(opts)) {
  -    // legacy...
  -    ctx.showHidden = opts;
  -  } else if (opts) {
  -    // got an "options" object
  -    exports._extend(ctx, opts);
  -  }
  -  // set default options
  -  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  -  if (isUndefined(ctx.depth)) ctx.depth = 2;
  -  if (isUndefined(ctx.colors)) ctx.colors = false;
  -  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  -  if (ctx.colors) ctx.stylize = stylizeWithColor;
  -  return formatValue(ctx, obj, ctx.depth);
  -}
  -exports.inspect = inspect;
  -
  -
  -// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
  -inspect.colors = {
  -  'bold' : [1, 22],
  -  'italic' : [3, 23],
  -  'underline' : [4, 24],
  -  'inverse' : [7, 27],
  -  'white' : [37, 39],
  -  'grey' : [90, 39],
  -  'black' : [30, 39],
  -  'blue' : [34, 39],
  -  'cyan' : [36, 39],
  -  'green' : [32, 39],
  -  'magenta' : [35, 39],
  -  'red' : [31, 39],
  -  'yellow' : [33, 39]
  -};
  -
  -// Don't use 'blue' not visible on cmd.exe
  -inspect.styles = {
  -  'special': 'cyan',
  -  'number': 'yellow',
  -  'boolean': 'yellow',
  -  'undefined': 'grey',
  -  'null': 'bold',
  -  'string': 'green',
  -  'date': 'magenta',
  -  // "name": intentionally not styling
  -  'regexp': 'red'
  -};
  -
  -
  -function stylizeWithColor(str, styleType) {
  -  var style = inspect.styles[styleType];
  -
  -  if (style) {
  -    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
  -           '\u001b[' + inspect.colors[style][1] + 'm';
  -  } else {
  -    return str;
  -  }
  -}
  -
  -
  -function stylizeNoColor(str, styleType) {
  -  return str;
  -}
  -
  -
  -function arrayToHash(array) {
  -  var hash = {};
  -
  -  array.forEach(function(val, idx) {
  -    hash[val] = true;
  -  });
  -
  -  return hash;
  -}
  -
  -
  -function formatValue(ctx, value, recurseTimes) {
  -  // Provide a hook for user-specified inspect functions.
  -  // Check that value is an object with an inspect function on it
  -  if (ctx.customInspect &&
  -      value &&
  -      isFunction(value.inspect) &&
  -      // Filter out the util module, it's inspect function is special
  -      value.inspect !== exports.inspect &&
  -      // Also filter out any prototype objects using the circular check.
  -      !(value.constructor && value.constructor.prototype === value)) {
  -    var ret = value.inspect(recurseTimes, ctx);
  -    if (!isString(ret)) {
  -      ret = formatValue(ctx, ret, recurseTimes);
  -    }
  -    return ret;
  -  }
  -
  -  // Primitive types cannot have properties
  -  var primitive = formatPrimitive(ctx, value);
  -  if (primitive) {
  -    return primitive;
  -  }
  -
  -  // Look up the keys of the object.
  -  var keys = Object.keys(value);
  -  var visibleKeys = arrayToHash(keys);
  -
  -  if (ctx.showHidden) {
  -    keys = Object.getOwnPropertyNames(value);
  -  }
  -
  -  // Some type of object without properties can be shortcutted.
  -  if (keys.length === 0) {
  -    if (isFunction(value)) {
  -      var name = value.name ? ': ' + value.name : '';
  -      return ctx.stylize('[Function' + name + ']', 'special');
  -    }
  -    if (isRegExp(value)) {
  -      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
  -    }
  -    if (isDate(value)) {
  -      return ctx.stylize(Date.prototype.toString.call(value), 'date');
  -    }
  -    if (isError(value)) {
  -      return formatError(value);
  -    }
  -  }
  -
  -  var base = '', array = false, braces = ['{', '}'];
  -
  -  // Make Array say that they are Array
  -  if (isArray(value)) {
  -    array = true;
  -    braces = ['[', ']'];
  -  }
  -
  -  // Make functions say that they are functions
  -  if (isFunction(value)) {
  -    var n = value.name ? ': ' + value.name : '';
  -    base = ' [Function' + n + ']';
  -  }
  -
  -  // Make RegExps say that they are RegExps
  -  if (isRegExp(value)) {
  -    base = ' ' + RegExp.prototype.toString.call(value);
  -  }
  -
  -  // Make dates with properties first say the date
  -  if (isDate(value)) {
  -    base = ' ' + Date.prototype.toUTCString.call(value);
  -  }
  -
  -  // Make error with message first say the error
  -  if (isError(value)) {
  -    base = ' ' + formatError(value);
  -  }
  -
  -  if (keys.length === 0 && (!array || value.length == 0)) {
  -    return braces[0] + base + braces[1];
  -  }
  -
  -  if (recurseTimes < 0) {
  -    if (isRegExp(value)) {
  -      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
  -    } else {
  -      return ctx.stylize('[Object]', 'special');
  -    }
  -  }
  -
  -  ctx.seen.push(value);
  -
  -  var output;
  -  if (array) {
  -    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  -  } else {
  -    output = keys.map(function(key) {
  -      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
  -    });
  -  }
  -
  -  ctx.seen.pop();
  -
  -  return reduceToSingleString(output, base, braces);
  -}
  -
  -
  -function formatPrimitive(ctx, value) {
  -  if (isUndefined(value))
  -    return ctx.stylize('undefined', 'undefined');
  -  if (isString(value)) {
  -    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
  -                                             .replace(/'/g, "\\'")
  -                                             .replace(/\\"/g, '"') + '\'';
  -    return ctx.stylize(simple, 'string');
  -  }
  -  if (isNumber(value)) {
  -    // Format -0 as '-0'. Strict equality won't distinguish 0 from -0,
  -    // so instead we use the fact that 1 / -0 < 0 whereas 1 / 0 > 0 .
  -    if (value === 0 && 1 / value < 0)
  -      return ctx.stylize('-0', 'number');
  -    return ctx.stylize('' + value, 'number');
  -  }
  -  if (isBoolean(value))
  -    return ctx.stylize('' + value, 'boolean');
  -  // For some reason typeof null is "object", so special case here.
  -  if (isNull(value))
  -    return ctx.stylize('null', 'null');
  -}
  -
  -
  -function formatError(value) {
  -  return '[' + Error.prototype.toString.call(value) + ']';
  -}
  -
  -
  -function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  -  var output = [];
  -  for (var i = 0, l = value.length; i < l; ++i) {
  -    if (hasOwnProperty(value, String(i))) {
  -      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
  -          String(i), true));
  -    } else {
  -      output.push('');
  -    }
  -  }
  -  keys.forEach(function(key) {
  -    if (!key.match(/^\d+$/)) {
  -      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
  -          key, true));
  -    }
  -  });
  -  return output;
  -}
  -
  -
  -function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  -  var name, str, desc;
  -  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  -  if (desc.get) {
  -    if (desc.set) {
  -      str = ctx.stylize('[Getter/Setter]', 'special');
  -    } else {
  -      str = ctx.stylize('[Getter]', 'special');
  -    }
  -  } else {
  -    if (desc.set) {
  -      str = ctx.stylize('[Setter]', 'special');
  -    }
  -  }
  -  if (!hasOwnProperty(visibleKeys, key)) {
  -    name = '[' + key + ']';
  -  }
  -  if (!str) {
  -    if (ctx.seen.indexOf(desc.value) < 0) {
  -      if (isNull(recurseTimes)) {
  -        str = formatValue(ctx, desc.value, null);
  -      } else {
  -        str = formatValue(ctx, desc.value, recurseTimes - 1);
  -      }
  -      if (str.indexOf('\n') > -1) {
  -        if (array) {
  -          str = str.split('\n').map(function(line) {
  -            return '  ' + line;
  -          }).join('\n').substr(2);
  -        } else {
  -          str = '\n' + str.split('\n').map(function(line) {
  -            return '   ' + line;
  -          }).join('\n');
  -        }
  -      }
  -    } else {
  -      str = ctx.stylize('[Circular]', 'special');
  -    }
  -  }
  -  if (isUndefined(name)) {
  -    if (array && key.match(/^\d+$/)) {
  -      return str;
  -    }
  -    name = JSON.stringify('' + key);
  -    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
  -      name = name.substr(1, name.length - 2);
  -      name = ctx.stylize(name, 'name');
  -    } else {
  -      name = name.replace(/'/g, "\\'")
  -                 .replace(/\\"/g, '"')
  -                 .replace(/(^"|"$)/g, "'");
  -      name = ctx.stylize(name, 'string');
  -    }
  -  }
  -
  -  return name + ': ' + str;
  -}
  -
  -
  -function reduceToSingleString(output, base, braces) {
  -  var numLinesEst = 0;
  -  var length = output.reduce(function(prev, cur) {
  -    numLinesEst++;
  -    if (cur.indexOf('\n') >= 0) numLinesEst++;
  -    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  -  }, 0);
  -
  -  if (length > 60) {
  -    return braces[0] +
  -           (base === '' ? '' : base + '\n ') +
  -           ' ' +
  -           output.join(',\n  ') +
  -           ' ' +
  -           braces[1];
  -  }
  -
  -  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
  -}
  -
  -
   // NOTE: These type checking functions intentionally don't use `instanceof`
   // because it is fragile and can be easily faked with `Object.create()`.
   function isArray(ar) {
  @@ -522,166 +98,10 @@ function isPrimitive(arg) {
   exports.isPrimitive = isPrimitive;
  
   function isBuffer(arg) {
  -  return arg instanceof Buffer;
  +  return Buffer.isBuffer(arg);
   }
   exports.isBuffer = isBuffer;
  
   function objectToString(o) {
     return Object.prototype.toString.call(o);
  -}
  -
  -
  -function pad(n) {
  -  return n < 10 ? '0' + n.toString(10) : n.toString(10);
  -}
  -
  -
  -var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
  -              'Oct', 'Nov', 'Dec'];
  -
  -// 26 Feb 16:19:34
  -function timestamp() {
  -  var d = new Date();
  -  var time = [pad(d.getHours()),
  -              pad(d.getMinutes()),
  -              pad(d.getSeconds())].join(':');
  -  return [d.getDate(), months[d.getMonth()], time].join(' ');
  -}
  -
  -
  -// log is just a thin wrapper to console.log that prepends a timestamp
  -exports.log = function() {
  -  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
  -};
  -
  -
  -/**
  - * Inherit the prototype methods from one constructor into another.
  - *
  - * The Function.prototype.inherits from lang.js rewritten as a standalone
  - * function (not on Function.prototype). NOTE: If this file is to be loaded
  - * during bootstrapping this function needs to be rewritten using some native
  - * functions as prototype setup using normal JavaScript does not work as
  - * expected during bootstrapping (see mirror.js in r114903).
  - *
  - * @param {function} ctor Constructor function which needs to inherit the
  - *     prototype.
  - * @param {function} superCtor Constructor function to inherit prototype from.
  - */
  -exports.inherits = function(ctor, superCtor) {
  -  ctor.super_ = superCtor;
  -  ctor.prototype = Object.create(superCtor.prototype, {
  -    constructor: {
  -      value: ctor,
  -      enumerable: false,
  -      writable: true,
  -      configurable: true
  -    }
  -  });
  -};
  -
  -exports._extend = function(origin, add) {
  -  // Don't do anything if add isn't an object
  -  if (!add || !isObject(add)) return origin;
  -
  -  var keys = Object.keys(add);
  -  var i = keys.length;
  -  while (i--) {
  -    origin[keys[i]] = add[keys[i]];
  -  }
  -  return origin;
  -};
  -
  -function hasOwnProperty(obj, prop) {
  -  return Object.prototype.hasOwnProperty.call(obj, prop);
  -}
  -
  -
  -// Deprecated old stuff.
  -
  -exports.p = exports.deprecate(function() {
  -  for (var i = 0, len = arguments.length; i < len; ++i) {
  -    console.error(exports.inspect(arguments[i]));
  -  }
  -}, 'util.p: Use console.error() instead');
  -
  -
  -exports.exec = exports.deprecate(function() {
  -  return require('child_process').exec.apply(this, arguments);
  -}, 'util.exec is now called `child_process.exec`.');
  -
  -
  -exports.print = exports.deprecate(function() {
  -  for (var i = 0, len = arguments.length; i < len; ++i) {
  -    process.stdout.write(String(arguments[i]));
  -  }
  -}, 'util.print: Use console.log instead');
  -
  -
  -exports.puts = exports.deprecate(function() {
  -  for (var i = 0, len = arguments.length; i < len; ++i) {
  -    process.stdout.write(arguments[i] + '\n');
  -  }
  -}, 'util.puts: Use console.log instead');
  -
  -
  -exports.debug = exports.deprecate(function(x) {
  -  process.stderr.write('DEBUG: ' + x + '\n');
  -}, 'util.debug: Use console.error instead');
  -
  -
  -exports.error = exports.deprecate(function(x) {
  -  for (var i = 0, len = arguments.length; i < len; ++i) {
  -    process.stderr.write(arguments[i] + '\n');
  -  }
  -}, 'util.error: Use console.error instead');
  -
  -
  -exports.pump = exports.deprecate(function(readStream, writeStream, callback) {
  -  var callbackCalled = false;
  -
  -  function call(a, b, c) {
  -    if (callback && !callbackCalled) {
  -      callback(a, b, c);
  -      callbackCalled = true;
  -    }
  -  }
  -
  -  readStream.addListener('data', function(chunk) {
  -    if (writeStream.write(chunk) === false) readStream.pause();
  -  });
  -
  -  writeStream.addListener('drain', function() {
  -    readStream.resume();
  -  });
  -
  -  readStream.addListener('end', function() {
  -    writeStream.end();
  -  });
  -
  -  readStream.addListener('close', function() {
  -    call();
  -  });
  -
  -  readStream.addListener('error', function(err) {
  -    writeStream.end();
  -    call(err);
  -  });
  -
  -  writeStream.addListener('error', function(err) {
  -    readStream.destroy();
  -    call(err);
  -  });
  -}, 'util.pump(): Use readableStream.pipe() instead');
  -
  -
  -var uv;
  -exports._errnoException = function(err, syscall) {
  -  if (isUndefined(uv)) uv = process.binding('uv');
  -  var errname = uv.errname(err);
  -  var e = new Error(syscall + ' ' + errname);
  -  e.code = errname;
  -  e.errno = errname;
  -  e.syscall = syscall;
  -  return e;
  -};
  +}