(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var Connector;

Connector = (function() {
  function Connector() {
    this.is_synced = false;
    this.compute_when_synced = [];
    this.connections = {};
    this.unsynced_connections = {};
    this.receive_handlers = [];
    this.sync_process_order = [];
  }

  Connector.prototype.whenSynced = function(args) {
    if (this.is_synced) {
      return args[0].apply(this, args.slice(1));
    } else {
      return this.compute_when_synced.push(args);
    }
  };

  Connector.prototype.whenReceiving = function(f) {
    return this.receive_handlers.push(f);
  };

  Connector.prototype.multicast = function(peers, message) {
    return this.whenSynced([_send, peers, message]);
  };

  Connector.prototype.unicast = function(peer, message) {
    return this.whenSynced([_send, peer, message]);
  };

  Connector.prototype.broadcast = function(message) {
    return this.whenSynced([
      (function(_this) {
        return function() {
          var peer, peerid, _ref, _results;
          _ref = _this.connections;
          _results = [];
          for (peerid in _ref) {
            peer = _ref[peerid];
            _results.push(_this._send(peerid, message));
          }
          return _results;
        };
      })(this)
    ]);
  };

  Connector.prototype.whenSyncing = function() {
    var i, _i, _ref, _results;
    _results = [];
    for (i = _i = _ref = arguments.length - 1; _ref <= 0 ? _i <= 0 : _i >= 0; i = _ref <= 0 ? ++_i : --_i) {
      _results.push(this.sync_process_order.unshift(arguments[i]));
    }
    return _results;
  };

  return Connector;

})();

module.exports = Connector;



},{}],2:[function(require,module,exports){
var Connector, TestConnector, _,
  __hasProp = {}.hasOwnProperty,
  __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

_ = require("underscore");

Connector = require('../connector');

TestConnector = (function(_super) {
  __extends(TestConnector, _super);

  function TestConnector(id) {
    this.id = id;
    TestConnector.__super__.constructor.call(this);
    this.execution_order = [];
    this.receive_buffer = {};
    this.connections = {};
    this.whenReceiving((function(_this) {
      return function(user, message) {
        return _this.execution_order.push(message);
      };
    })(this));
  }

  TestConnector.prototype.join = function(conn) {
    var c, cid, comp, _i, _len, _ref, _ref1, _results;
    this._addConnection(conn.id, conn);
    _ref = conn.connections;
    for (cid in _ref) {
      c = _ref[cid];
      this._addConnection(cid, c);
    }
    this.is_synced = true;
    _ref1 = this.compute_when_synced;
    _results = [];
    for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
      comp = _ref1[_i];
      _results.push(comp[0].apply(this, comp.slice(1)));
    }
    return _results;
  };

  TestConnector.prototype._addConnection = function(id, user_connector) {
    var data, data_, i, user_data, _i, _ref;
    if (this.connections[id] == null) {
      data = null;
      user_data = null;
      for (i = _i = 0, _ref = this.sync_process_order.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
        data_ = this.sync_process_order[i].call(this, user_data);
        user_data = user_connector.sync_process_order[0].call(user_connector, data);
        data = data_;
      }
      this.connections[id] = user_connector;
      return user_connector.connections[this.id] = this;
    }
  };

  TestConnector.prototype.getOpsInExecutionOrder = function() {
    return this.execution_order;
  };

  TestConnector.prototype._send = function(uid, message) {
    var rb, _name;
    rb = this.connections[uid].receive_buffer;
    if (rb[_name = this.id] == null) {
      rb[_name] = [];
    }
    return rb[this.id].push(message);
  };

  TestConnector.prototype.flushOne = function(uid) {
    var f, message, _i, _len, _ref, _ref1, _results;
    if (((_ref = this.receive_buffer[uid]) != null ? _ref.length : void 0) > 0) {
      message = this.receive_buffer[uid].shift();
      _ref1 = this.receive_handlers;
      _results = [];
      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
        f = _ref1[_i];
        _results.push(f(uid, message));
      }
      return _results;
    }
  };

  TestConnector.prototype.flushOneRandom = function() {
    var c, cid, connlist;
    connlist = (function() {
      var _ref, _results;
      _ref = this.receive_buffer;
      _results = [];
      for (cid in _ref) {
        c = _ref[cid];
        _results.push(cid);
      }
      return _results;
    }).call(this);
    return this.flushOne(connlist[_.random(0, connlist.length - 1)]);
  };

  TestConnector.prototype.flushAll = function() {
    var f, message, messages, n, _i, _j, _len, _len1, _ref, _ref1;
    _ref = this.receive_buffer;
    for (n in _ref) {
      messages = _ref[n];
      for (_i = 0, _len = messages.length; _i < _len; _i++) {
        message = messages[_i];
        _ref1 = this.receive_handlers;
        for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
          f = _ref1[_j];
          f(n, message);
        }
      }
    }
    return this.receive_buffer = {};
  };

  return TestConnector;

})(Connector);

if (typeof window !== "undefined" && window !== null) {
  window.TestConnector = TestConnector;
}

if (typeof module !== "undefined" && module !== null) {
  module.exports = TestConnector;
}



},{"../connector":1,"underscore":3}],3:[function(require,module,exports){
//     Underscore.js 1.7.0
//     http://underscorejs.org
//     (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Underscore may be freely distributed under the MIT license.

(function() {

  // Baseline setup
  // --------------

  // Establish the root object, `window` in the browser, or `exports` on the server.
  var root = this;

  // Save the previous value of the `_` variable.
  var previousUnderscore = root._;

  // Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;

  // Create quick reference variables for speed access to core prototypes.
  var
    push             = ArrayProto.push,
    slice            = ArrayProto.slice,
    concat           = ArrayProto.concat,
    toString         = ObjProto.toString,
    hasOwnProperty   = ObjProto.hasOwnProperty;

  // All **ECMAScript 5** native function implementations that we hope to use
  // are declared here.
  var
    nativeIsArray      = Array.isArray,
    nativeKeys         = Object.keys,
    nativeBind         = FuncProto.bind;

  // Create a safe reference to the Underscore object for use below.
  var _ = function(obj) {
    if (obj instanceof _) return obj;
    if (!(this instanceof _)) return new _(obj);
    this._wrapped = obj;
  };

  // Export the Underscore object for **Node.js**, with
  // backwards-compatibility for the old `require()` API. If we're in
  // the browser, add `_` as a global object.
  if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
      exports = module.exports = _;
    }
    exports._ = _;
  } else {
    root._ = _;
  }

  // Current version.
  _.VERSION = '1.7.0';

  // Internal function that returns an efficient (for current engines) version
  // of the passed-in callback, to be repeatedly applied in other Underscore
  // functions.
  var createCallback = function(func, context, argCount) {
    if (context === void 0) return func;
    switch (argCount == null ? 3 : argCount) {
      case 1: return function(value) {
        return func.call(context, value);
      };
      case 2: return function(value, other) {
        return func.call(context, value, other);
      };
      case 3: return function(value, index, collection) {
        return func.call(context, value, index, collection);
      };
      case 4: return function(accumulator, value, index, collection) {
        return func.call(context, accumulator, value, index, collection);
      };
    }
    return function() {
      return func.apply(context, arguments);
    };
  };

  // A mostly-internal function to generate callbacks that can be applied
  // to each element in a collection, returning the desired result — either
  // identity, an arbitrary callback, a property matcher, or a property accessor.
  _.iteratee = function(value, context, argCount) {
    if (value == null) return _.identity;
    if (_.isFunction(value)) return createCallback(value, context, argCount);
    if (_.isObject(value)) return _.matches(value);
    return _.property(value);
  };

  // Collection Functions
  // --------------------

  // The cornerstone, an `each` implementation, aka `forEach`.
  // Handles raw objects in addition to array-likes. Treats all
  // sparse array-likes as if they were dense.
  _.each = _.forEach = function(obj, iteratee, context) {
    if (obj == null) return obj;
    iteratee = createCallback(iteratee, context);
    var i, length = obj.length;
    if (length === +length) {
      for (i = 0; i < length; i++) {
        iteratee(obj[i], i, obj);
      }
    } else {
      var keys = _.keys(obj);
      for (i = 0, length = keys.length; i < length; i++) {
        iteratee(obj[keys[i]], keys[i], obj);
      }
    }
    return obj;
  };

  // Return the results of applying the iteratee to each element.
  _.map = _.collect = function(obj, iteratee, context) {
    if (obj == null) return [];
    iteratee = _.iteratee(iteratee, context);
    var keys = obj.length !== +obj.length && _.keys(obj),
        length = (keys || obj).length,
        results = Array(length),
        currentKey;
    for (var index = 0; index < length; index++) {
      currentKey = keys ? keys[index] : index;
      results[index] = iteratee(obj[currentKey], currentKey, obj);
    }
    return results;
  };

  var reduceError = 'Reduce of empty array with no initial value';

  // **Reduce** builds up a single result from a list of values, aka `inject`,
  // or `foldl`.
  _.reduce = _.foldl = _.inject = function(obj, iteratee, memo, context) {
    if (obj == null) obj = [];
    iteratee = createCallback(iteratee, context, 4);
    var keys = obj.length !== +obj.length && _.keys(obj),
        length = (keys || obj).length,
        index = 0, currentKey;
    if (arguments.length < 3) {
      if (!length) throw new TypeError(reduceError);
      memo = obj[keys ? keys[index++] : index++];
    }
    for (; index < length; index++) {
      currentKey = keys ? keys[index] : index;
      memo = iteratee(memo, obj[currentKey], currentKey, obj);
    }
    return memo;
  };

  // The right-associative version of reduce, also known as `foldr`.
  _.reduceRight = _.foldr = function(obj, iteratee, memo, context) {
    if (obj == null) obj = [];
    iteratee = createCallback(iteratee, context, 4);
    var keys = obj.length !== + obj.length && _.keys(obj),
        index = (keys || obj).length,
        currentKey;
    if (arguments.length < 3) {
      if (!index) throw new TypeError(reduceError);
      memo = obj[keys ? keys[--index] : --index];
    }
    while (index--) {
      currentKey = keys ? keys[index] : index;
      memo = iteratee(memo, obj[currentKey], currentKey, obj);
    }
    return memo;
  };

  // Return the first value which passes a truth test. Aliased as `detect`.
  _.find = _.detect = function(obj, predicate, context) {
    var result;
    predicate = _.iteratee(predicate, context);
    _.some(obj, function(value, index, list) {
      if (predicate(value, index, list)) {
        result = value;
        return true;
      }
    });
    return result;
  };

  // Return all the elements that pass a truth test.
  // Aliased as `select`.
  _.filter = _.select = function(obj, predicate, context) {
    var results = [];
    if (obj == null) return results;
    predicate = _.iteratee(predicate, context);
    _.each(obj, function(value, index, list) {
      if (predicate(value, index, list)) results.push(value);
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, predicate, context) {
    return _.filter(obj, _.negate(_.iteratee(predicate)), context);
  };

  // Determine whether all of the elements match a truth test.
  // Aliased as `all`.
  _.every = _.all = function(obj, predicate, context) {
    if (obj == null) return true;
    predicate = _.iteratee(predicate, context);
    var keys = obj.length !== +obj.length && _.keys(obj),
        length = (keys || obj).length,
        index, currentKey;
    for (index = 0; index < length; index++) {
      currentKey = keys ? keys[index] : index;
      if (!predicate(obj[currentKey], currentKey, obj)) return false;
    }
    return true;
  };

  // Determine if at least one element in the object matches a truth test.
  // Aliased as `any`.
  _.some = _.any = function(obj, predicate, context) {
    if (obj == null) return false;
    predicate = _.iteratee(predicate, context);
    var keys = obj.length !== +obj.length && _.keys(obj),
        length = (keys || obj).length,
        index, currentKey;
    for (index = 0; index < length; index++) {
      currentKey = keys ? keys[index] : index;
      if (predicate(obj[currentKey], currentKey, obj)) return true;
    }
    return false;
  };

  // Determine if the array or object contains a given value (using `===`).
  // Aliased as `include`.
  _.contains = _.include = function(obj, target) {
    if (obj == null) return false;
    if (obj.length !== +obj.length) obj = _.values(obj);
    return _.indexOf(obj, target) >= 0;
  };

  // Invoke a method (with arguments) on every item in a collection.
  _.invoke = function(obj, method) {
    var args = slice.call(arguments, 2);
    var isFunc = _.isFunction(method);
    return _.map(obj, function(value) {
      return (isFunc ? method : value[method]).apply(value, args);
    });
  };

  // Convenience version of a common use case of `map`: fetching a property.
  _.pluck = function(obj, key) {
    return _.map(obj, _.property(key));
  };

  // Convenience version of a common use case of `filter`: selecting only objects
  // containing specific `key:value` pairs.
  _.where = function(obj, attrs) {
    return _.filter(obj, _.matches(attrs));
  };

  // Convenience version of a common use case of `find`: getting the first object
  // containing specific `key:value` pairs.
  _.findWhere = function(obj, attrs) {
    return _.find(obj, _.matches(attrs));
  };

  // Return the maximum element (or element-based computation).
  _.max = function(obj, iteratee, context) {
    var result = -Infinity, lastComputed = -Infinity,
        value, computed;
    if (iteratee == null && obj != null) {
      obj = obj.length === +obj.length ? obj : _.values(obj);
      for (var i = 0, length = obj.length; i < length; i++) {
        value = obj[i];
        if (value > result) {
          result = value;
        }
      }
    } else {
      iteratee = _.iteratee(iteratee, context);
      _.each(obj, function(value, index, list) {
        computed = iteratee(value, index, list);
        if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
          result = value;
          lastComputed = computed;
        }
      });
    }
    return result;
  };

  // Return the minimum element (or element-based computation).
  _.min = function(obj, iteratee, context) {
    var result = Infinity, lastComputed = Infinity,
        value, computed;
    if (iteratee == null && obj != null) {
      obj = obj.length === +obj.length ? obj : _.values(obj);
      for (var i = 0, length = obj.length; i < length; i++) {
        value = obj[i];
        if (value < result) {
          result = value;
        }
      }
    } else {
      iteratee = _.iteratee(iteratee, context);
      _.each(obj, function(value, index, list) {
        computed = iteratee(value, index, list);
        if (computed < lastComputed || computed === Infinity && result === Infinity) {
          result = value;
          lastComputed = computed;
        }
      });
    }
    return result;
  };

  // Shuffle a collection, using the modern version of the
  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
  _.shuffle = function(obj) {
    var set = obj && obj.length === +obj.length ? obj : _.values(obj);
    var length = set.length;
    var shuffled = Array(length);
    for (var index = 0, rand; index < length; index++) {
      rand = _.random(0, index);
      if (rand !== index) shuffled[index] = shuffled[rand];
      shuffled[rand] = set[index];
    }
    return shuffled;
  };

  // Sample **n** random values from a collection.
  // If **n** is not specified, returns a single random element.
  // The internal `guard` argument allows it to work with `map`.
  _.sample = function(obj, n, guard) {
    if (n == null || guard) {
      if (obj.length !== +obj.length) obj = _.values(obj);
      return obj[_.random(obj.length - 1)];
    }
    return _.shuffle(obj).slice(0, Math.max(0, n));
  };

  // Sort the object's values by a criterion produced by an iteratee.
  _.sortBy = function(obj, iteratee, context) {
    iteratee = _.iteratee(iteratee, context);
    return _.pluck(_.map(obj, function(value, index, list) {
      return {
        value: value,
        index: index,
        criteria: iteratee(value, index, list)
      };
    }).sort(function(left, right) {
      var a = left.criteria;
      var b = right.criteria;
      if (a !== b) {
        if (a > b || a === void 0) return 1;
        if (a < b || b === void 0) return -1;
      }
      return left.index - right.index;
    }), 'value');
  };

  // An internal function used for aggregate "group by" operations.
  var group = function(behavior) {
    return function(obj, iteratee, context) {
      var result = {};
      iteratee = _.iteratee(iteratee, context);
      _.each(obj, function(value, index) {
        var key = iteratee(value, index, obj);
        behavior(result, value, key);
      });
      return result;
    };
  };

  // Groups the object's values by a criterion. Pass either a string attribute
  // to group by, or a function that returns the criterion.
  _.groupBy = group(function(result, value, key) {
    if (_.has(result, key)) result[key].push(value); else result[key] = [value];
  });

  // Indexes the object's values by a criterion, similar to `groupBy`, but for
  // when you know that your index values will be unique.
  _.indexBy = group(function(result, value, key) {
    result[key] = value;
  });

  // Counts instances of an object that group by a certain criterion. Pass
  // either a string attribute to count by, or a function that returns the
  // criterion.
  _.countBy = group(function(result, value, key) {
    if (_.has(result, key)) result[key]++; else result[key] = 1;
  });

  // Use a comparator function to figure out the smallest index at which
  // an object should be inserted so as to maintain order. Uses binary search.
  _.sortedIndex = function(array, obj, iteratee, context) {
    iteratee = _.iteratee(iteratee, context, 1);
    var value = iteratee(obj);
    var low = 0, high = array.length;
    while (low < high) {
      var mid = low + high >>> 1;
      if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
    }
    return low;
  };

  // Safely create a real, live array from anything iterable.
  _.toArray = function(obj) {
    if (!obj) return [];
    if (_.isArray(obj)) return slice.call(obj);
    if (obj.length === +obj.length) return _.map(obj, _.identity);
    return _.values(obj);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    if (obj == null) return 0;
    return obj.length === +obj.length ? obj.length : _.keys(obj).length;
  };

  // Split a collection into two arrays: one whose elements all satisfy the given
  // predicate, and one whose elements all do not satisfy the predicate.
  _.partition = function(obj, predicate, context) {
    predicate = _.iteratee(predicate, context);
    var pass = [], fail = [];
    _.each(obj, function(value, key, obj) {
      (predicate(value, key, obj) ? pass : fail).push(value);
    });
    return [pass, fail];
  };

  // Array Functions
  // ---------------

  // Get the first element of an array. Passing **n** will return the first N
  // values in the array. Aliased as `head` and `take`. The **guard** check
  // allows it to work with `_.map`.
  _.first = _.head = _.take = function(array, n, guard) {
    if (array == null) return void 0;
    if (n == null || guard) return array[0];
    if (n < 0) return [];
    return slice.call(array, 0, n);
  };

  // Returns everything but the last entry of the array. Especially useful on
  // the arguments object. Passing **n** will return all the values in
  // the array, excluding the last N. The **guard** check allows it to work with
  // `_.map`.
  _.initial = function(array, n, guard) {
    return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
  };

  // Get the last element of an array. Passing **n** will return the last N
  // values in the array. The **guard** check allows it to work with `_.map`.
  _.last = function(array, n, guard) {
    if (array == null) return void 0;
    if (n == null || guard) return array[array.length - 1];
    return slice.call(array, Math.max(array.length - n, 0));
  };

  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
  // Especially useful on the arguments object. Passing an **n** will return
  // the rest N values in the array. The **guard**
  // check allows it to work with `_.map`.
  _.rest = _.tail = _.drop = function(array, n, guard) {
    return slice.call(array, n == null || guard ? 1 : n);
  };

  // Trim out all falsy values from an array.
  _.compact = function(array) {
    return _.filter(array, _.identity);
  };

  // Internal implementation of a recursive `flatten` function.
  var flatten = function(input, shallow, strict, output) {
    if (shallow && _.every(input, _.isArray)) {
      return concat.apply(output, input);
    }
    for (var i = 0, length = input.length; i < length; i++) {
      var value = input[i];
      if (!_.isArray(value) && !_.isArguments(value)) {
        if (!strict) output.push(value);
      } else if (shallow) {
        push.apply(output, value);
      } else {
        flatten(value, shallow, strict, output);
      }
    }
    return output;
  };

  // Flatten out an array, either recursively (by default), or just one level.
  _.flatten = function(array, shallow) {
    return flatten(array, shallow, false, []);
  };

  // Return a version of the array that does not contain the specified value(s).
  _.without = function(array) {
    return _.difference(array, slice.call(arguments, 1));
  };

  // Produce a duplicate-free version of the array. If the array has already
  // been sorted, you have the option of using a faster algorithm.
  // Aliased as `unique`.
  _.uniq = _.unique = function(array, isSorted, iteratee, context) {
    if (array == null) return [];
    if (!_.isBoolean(isSorted)) {
      context = iteratee;
      iteratee = isSorted;
      isSorted = false;
    }
    if (iteratee != null) iteratee = _.iteratee(iteratee, context);
    var result = [];
    var seen = [];
    for (var i = 0, length = array.length; i < length; i++) {
      var value = array[i];
      if (isSorted) {
        if (!i || seen !== value) result.push(value);
        seen = value;
      } else if (iteratee) {
        var computed = iteratee(value, i, array);
        if (_.indexOf(seen, computed) < 0) {
          seen.push(computed);
          result.push(value);
        }
      } else if (_.indexOf(result, value) < 0) {
        result.push(value);
      }
    }
    return result;
  };

  // Produce an array that contains the union: each distinct element from all of
  // the passed-in arrays.
  _.union = function() {
    return _.uniq(flatten(arguments, true, true, []));
  };

  // Produce an array that contains every item shared between all the
  // passed-in arrays.
  _.intersection = function(array) {
    if (array == null) return [];
    var result = [];
    var argsLength = arguments.length;
    for (var i = 0, length = array.length; i < length; i++) {
      var item = array[i];
      if (_.contains(result, item)) continue;
      for (var j = 1; j < argsLength; j++) {
        if (!_.contains(arguments[j], item)) break;
      }
      if (j === argsLength) result.push(item);
    }
    return result;
  };

  // Take the difference between one array and a number of other arrays.
  // Only the elements present in just the first array will remain.
  _.difference = function(array) {
    var rest = flatten(slice.call(arguments, 1), true, true, []);
    return _.filter(array, function(value){
      return !_.contains(rest, value);
    });
  };

  // Zip together multiple lists into a single array -- elements that share
  // an index go together.
  _.zip = function(array) {
    if (array == null) return [];
    var length = _.max(arguments, 'length').length;
    var results = Array(length);
    for (var i = 0; i < length; i++) {
      results[i] = _.pluck(arguments, i);
    }
    return results;
  };

  // Converts lists into objects. Pass either a single array of `[key, value]`
  // pairs, or two parallel arrays of the same length -- one of keys, and one of
  // the corresponding values.
  _.object = function(list, values) {
    if (list == null) return {};
    var result = {};
    for (var i = 0, length = list.length; i < length; i++) {
      if (values) {
        result[list[i]] = values[i];
      } else {
        result[list[i][0]] = list[i][1];
      }
    }
    return result;
  };

  // Return the position of the first occurrence of an item in an array,
  // or -1 if the item is not included in the array.
  // If the array is large and already in sort order, pass `true`
  // for **isSorted** to use binary search.
  _.indexOf = function(array, item, isSorted) {
    if (array == null) return -1;
    var i = 0, length = array.length;
    if (isSorted) {
      if (typeof isSorted == 'number') {
        i = isSorted < 0 ? Math.max(0, length + isSorted) : isSorted;
      } else {
        i = _.sortedIndex(array, item);
        return array[i] === item ? i : -1;
      }
    }
    for (; i < length; i++) if (array[i] === item) return i;
    return -1;
  };

  _.lastIndexOf = function(array, item, from) {
    if (array == null) return -1;
    var idx = array.length;
    if (typeof from == 'number') {
      idx = from < 0 ? idx + from + 1 : Math.min(idx, from + 1);
    }
    while (--idx >= 0) if (array[idx] === item) return idx;
    return -1;
  };

  // Generate an integer Array containing an arithmetic progression. A port of
  // the native Python `range()` function. See
  // [the Python documentation](http://docs.python.org/library/functions.html#range).
  _.range = function(start, stop, step) {
    if (arguments.length <= 1) {
      stop = start || 0;
      start = 0;
    }
    step = step || 1;

    var length = Math.max(Math.ceil((stop - start) / step), 0);
    var range = Array(length);

    for (var idx = 0; idx < length; idx++, start += step) {
      range[idx] = start;
    }

    return range;
  };

  // Function (ahem) Functions
  // ------------------

  // Reusable constructor function for prototype setting.
  var Ctor = function(){};

  // Create a function bound to a given object (assigning `this`, and arguments,
  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
  // available.
  _.bind = function(func, context) {
    var args, bound;
    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
    if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
    args = slice.call(arguments, 2);
    bound = function() {
      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
      Ctor.prototype = func.prototype;
      var self = new Ctor;
      Ctor.prototype = null;
      var result = func.apply(self, args.concat(slice.call(arguments)));
      if (_.isObject(result)) return result;
      return self;
    };
    return bound;
  };

  // Partially apply a function by creating a version that has had some of its
  // arguments pre-filled, without changing its dynamic `this` context. _ acts
  // as a placeholder, allowing any combination of arguments to be pre-filled.
  _.partial = function(func) {
    var boundArgs = slice.call(arguments, 1);
    return function() {
      var position = 0;
      var args = boundArgs.slice();
      for (var i = 0, length = args.length; i < length; i++) {
        if (args[i] === _) args[i] = arguments[position++];
      }
      while (position < arguments.length) args.push(arguments[position++]);
      return func.apply(this, args);
    };
  };

  // Bind a number of an object's methods to that object. Remaining arguments
  // are the method names to be bound. Useful for ensuring that all callbacks
  // defined on an object belong to it.
  _.bindAll = function(obj) {
    var i, length = arguments.length, key;
    if (length <= 1) throw new Error('bindAll must be passed function names');
    for (i = 1; i < length; i++) {
      key = arguments[i];
      obj[key] = _.bind(obj[key], obj);
    }
    return obj;
  };

  // Memoize an expensive function by storing its results.
  _.memoize = function(func, hasher) {
    var memoize = function(key) {
      var cache = memoize.cache;
      var address = hasher ? hasher.apply(this, arguments) : key;
      if (!_.has(cache, address)) cache[address] = func.apply(this, arguments);
      return cache[address];
    };
    memoize.cache = {};
    return memoize;
  };

  // Delays a function for the given number of milliseconds, and then calls
  // it with the arguments supplied.
  _.delay = function(func, wait) {
    var args = slice.call(arguments, 2);
    return setTimeout(function(){
      return func.apply(null, args);
    }, wait);
  };

  // Defers a function, scheduling it to run after the current call stack has
  // cleared.
  _.defer = function(func) {
    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
  };

  // Returns a function, that, when invoked, will only be triggered at most once
  // during a given window of time. Normally, the throttled function will run
  // as much as it can, without ever going more than once per `wait` duration;
  // but if you'd like to disable the execution on the leading edge, pass
  // `{leading: false}`. To disable execution on the trailing edge, ditto.
  _.throttle = function(func, wait, options) {
    var context, args, result;
    var timeout = null;
    var previous = 0;
    if (!options) options = {};
    var later = function() {
      previous = options.leading === false ? 0 : _.now();
      timeout = null;
      result = func.apply(context, args);
      if (!timeout) context = args = null;
    };
    return function() {
      var now = _.now();
      if (!previous && options.leading === false) previous = now;
      var remaining = wait - (now - previous);
      context = this;
      args = arguments;
      if (remaining <= 0 || remaining > wait) {
        clearTimeout(timeout);
        timeout = null;
        previous = now;
        result = func.apply(context, args);
        if (!timeout) context = args = null;
      } else if (!timeout && options.trailing !== false) {
        timeout = setTimeout(later, remaining);
      }
      return result;
    };
  };

  // Returns a function, that, as long as it continues to be invoked, will not
  // be triggered. The function will be called after it stops being called for
  // N milliseconds. If `immediate` is passed, trigger the function on the
  // leading edge, instead of the trailing.
  _.debounce = function(func, wait, immediate) {
    var timeout, args, context, timestamp, result;

    var later = function() {
      var last = _.now() - timestamp;

      if (last < wait && last > 0) {
        timeout = setTimeout(later, wait - last);
      } else {
        timeout = null;
        if (!immediate) {
          result = func.apply(context, args);
          if (!timeout) context = args = null;
        }
      }
    };

    return function() {
      context = this;
      args = arguments;
      timestamp = _.now();
      var callNow = immediate && !timeout;
      if (!timeout) timeout = setTimeout(later, wait);
      if (callNow) {
        result = func.apply(context, args);
        context = args = null;
      }

      return result;
    };
  };

  // Returns the first function passed as an argument to the second,
  // allowing you to adjust arguments, run code before and after, and
  // conditionally execute the original function.
  _.wrap = function(func, wrapper) {
    return _.partial(wrapper, func);
  };

  // Returns a negated version of the passed-in predicate.
  _.negate = function(predicate) {
    return function() {
      return !predicate.apply(this, arguments);
    };
  };

  // Returns a function that is the composition of a list of functions, each
  // consuming the return value of the function that follows.
  _.compose = function() {
    var args = arguments;
    var start = args.length - 1;
    return function() {
      var i = start;
      var result = args[start].apply(this, arguments);
      while (i--) result = args[i].call(this, result);
      return result;
    };
  };

  // Returns a function that will only be executed after being called N times.
  _.after = function(times, func) {
    return function() {
      if (--times < 1) {
        return func.apply(this, arguments);
      }
    };
  };

  // Returns a function that will only be executed before being called N times.
  _.before = function(times, func) {
    var memo;
    return function() {
      if (--times > 0) {
        memo = func.apply(this, arguments);
      } else {
        func = null;
      }
      return memo;
    };
  };

  // Returns a function that will be executed at most one time, no matter how
  // often you call it. Useful for lazy initialization.
  _.once = _.partial(_.before, 2);

  // Object Functions
  // ----------------

  // Retrieve the names of an object's properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`
  _.keys = function(obj) {
    if (!_.isObject(obj)) return [];
    if (nativeKeys) return nativeKeys(obj);
    var keys = [];
    for (var key in obj) if (_.has(obj, key)) keys.push(key);
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var values = Array(length);
    for (var i = 0; i < length; i++) {
      values[i] = obj[keys[i]];
    }
    return values;
  };

  // Convert an object into a list of `[key, value]` pairs.
  _.pairs = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var pairs = Array(length);
    for (var i = 0; i < length; i++) {
      pairs[i] = [keys[i], obj[keys[i]]];
    }
    return pairs;
  };

  // Invert the keys and values of an object. The values must be serializable.
  _.invert = function(obj) {
    var result = {};
    var keys = _.keys(obj);
    for (var i = 0, length = keys.length; i < length; i++) {
      result[obj[keys[i]]] = keys[i];
    }
    return result;
  };

  // Return a sorted list of the function names available on the object.
  // Aliased as `methods`
  _.functions = _.methods = function(obj) {
    var names = [];
    for (var key in obj) {
      if (_.isFunction(obj[key])) names.push(key);
    }
    return names.sort();
  };

  // Extend a given object with all the properties in passed-in object(s).
  _.extend = function(obj) {
    if (!_.isObject(obj)) return obj;
    var source, prop;
    for (var i = 1, length = arguments.length; i < length; i++) {
      source = arguments[i];
      for (prop in source) {
        if (hasOwnProperty.call(source, prop)) {
            obj[prop] = source[prop];
        }
      }
    }
    return obj;
  };

  // Return a copy of the object only containing the whitelisted properties.
  _.pick = function(obj, iteratee, context) {
    var result = {}, key;
    if (obj == null) return result;
    if (_.isFunction(iteratee)) {
      iteratee = createCallback(iteratee, context);
      for (key in obj) {
        var value = obj[key];
        if (iteratee(value, key, obj)) result[key] = value;
      }
    } else {
      var keys = concat.apply([], slice.call(arguments, 1));
      obj = new Object(obj);
      for (var i = 0, length = keys.length; i < length; i++) {
        key = keys[i];
        if (key in obj) result[key] = obj[key];
      }
    }
    return result;
  };

   // Return a copy of the object without the blacklisted properties.
  _.omit = function(obj, iteratee, context) {
    if (_.isFunction(iteratee)) {
      iteratee = _.negate(iteratee);
    } else {
      var keys = _.map(concat.apply([], slice.call(arguments, 1)), String);
      iteratee = function(value, key) {
        return !_.contains(keys, key);
      };
    }
    return _.pick(obj, iteratee, context);
  };

  // Fill in a given object with default properties.
  _.defaults = function(obj) {
    if (!_.isObject(obj)) return obj;
    for (var i = 1, length = arguments.length; i < length; i++) {
      var source = arguments[i];
      for (var prop in source) {
        if (obj[prop] === void 0) obj[prop] = source[prop];
      }
    }
    return obj;
  };

  // Create a (shallow-cloned) duplicate of an object.
  _.clone = function(obj) {
    if (!_.isObject(obj)) return obj;
    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
  };

  // Invokes interceptor with the obj, and then returns obj.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  _.tap = function(obj, interceptor) {
    interceptor(obj);
    return obj;
  };

  // Internal recursive comparison function for `isEqual`.
  var eq = function(a, b, aStack, bStack) {
    // Identical objects are equal. `0 === -0`, but they aren't identical.
    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
    if (a === b) return a !== 0 || 1 / a === 1 / b;
    // A strict comparison is necessary because `null == undefined`.
    if (a == null || b == null) return a === b;
    // Unwrap any wrapped objects.
    if (a instanceof _) a = a._wrapped;
    if (b instanceof _) b = b._wrapped;
    // Compare `[[Class]]` names.
    var className = toString.call(a);
    if (className !== toString.call(b)) return false;
    switch (className) {
      // Strings, numbers, regular expressions, dates, and booleans are compared by value.
      case '[object RegExp]':
      // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
      case '[object String]':
        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
        // equivalent to `new String("5")`.
        return '' + a === '' + b;
      case '[object Number]':
        // `NaN`s are equivalent, but non-reflexive.
        // Object(NaN) is equivalent to NaN
        if (+a !== +a) return +b !== +b;
        // An `egal` comparison is performed for other numeric values.
        return +a === 0 ? 1 / +a === 1 / b : +a === +b;
      case '[object Date]':
      case '[object Boolean]':
        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
        // millisecond representations. Note that invalid dates with millisecond representations
        // of `NaN` are not equivalent.
        return +a === +b;
    }
    if (typeof a != 'object' || typeof b != 'object') return false;
    // Assume equality for cyclic structures. The algorithm for detecting cyclic
    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
    var length = aStack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (aStack[length] === a) return bStack[length] === b;
    }
    // Objects with different constructors are not equivalent, but `Object`s
    // from different frames are.
    var aCtor = a.constructor, bCtor = b.constructor;
    if (
      aCtor !== bCtor &&
      // Handle Object.create(x) cases
      'constructor' in a && 'constructor' in b &&
      !(_.isFunction(aCtor) && aCtor instanceof aCtor &&
        _.isFunction(bCtor) && bCtor instanceof bCtor)
    ) {
      return false;
    }
    // Add the first object to the stack of traversed objects.
    aStack.push(a);
    bStack.push(b);
    var size, result;
    // Recursively compare objects and arrays.
    if (className === '[object Array]') {
      // Compare array lengths to determine if a deep comparison is necessary.
      size = a.length;
      result = size === b.length;
      if (result) {
        // Deep compare the contents, ignoring non-numeric properties.
        while (size--) {
          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
        }
      }
    } else {
      // Deep compare objects.
      var keys = _.keys(a), key;
      size = keys.length;
      // Ensure that both objects contain the same number of properties before comparing deep equality.
      result = _.keys(b).length === size;
      if (result) {
        while (size--) {
          // Deep compare each member
          key = keys[size];
          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
        }
      }
    }
    // Remove the first object from the stack of traversed objects.
    aStack.pop();
    bStack.pop();
    return result;
  };

  // Perform a deep comparison to check if two objects are equal.
  _.isEqual = function(a, b) {
    return eq(a, b, [], []);
  };

  // Is a given array, string, or object empty?
  // An "empty" object has no enumerable own-properties.
  _.isEmpty = function(obj) {
    if (obj == null) return true;
    if (_.isArray(obj) || _.isString(obj) || _.isArguments(obj)) return obj.length === 0;
    for (var key in obj) if (_.has(obj, key)) return false;
    return true;
  };

  // Is a given value a DOM element?
  _.isElement = function(obj) {
    return !!(obj && obj.nodeType === 1);
  };

  // Is a given value an array?
  // Delegates to ECMA5's native Array.isArray
  _.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) === '[object Array]';
  };

  // Is a given variable an object?
  _.isObject = function(obj) {
    var type = typeof obj;
    return type === 'function' || type === 'object' && !!obj;
  };

  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
    _['is' + name] = function(obj) {
      return toString.call(obj) === '[object ' + name + ']';
    };
  });

  // Define a fallback version of the method in browsers (ahem, IE), where
  // there isn't any inspectable "Arguments" type.
  if (!_.isArguments(arguments)) {
    _.isArguments = function(obj) {
      return _.has(obj, 'callee');
    };
  }

  // Optimize `isFunction` if appropriate. Work around an IE 11 bug.
  if (typeof /./ !== 'function') {
    _.isFunction = function(obj) {
      return typeof obj == 'function' || false;
    };
  }

  // Is a given object a finite number?
  _.isFinite = function(obj) {
    return isFinite(obj) && !isNaN(parseFloat(obj));
  };

  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
  _.isNaN = function(obj) {
    return _.isNumber(obj) && obj !== +obj;
  };

  // Is a given value a boolean?
  _.isBoolean = function(obj) {
    return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
  };

  // Is a given value equal to null?
  _.isNull = function(obj) {
    return obj === null;
  };

  // Is a given variable undefined?
  _.isUndefined = function(obj) {
    return obj === void 0;
  };

  // Shortcut function for checking if an object has a given property directly
  // on itself (in other words, not on a prototype).
  _.has = function(obj, key) {
    return obj != null && hasOwnProperty.call(obj, key);
  };

  // Utility Functions
  // -----------------

  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
  // previous owner. Returns a reference to the Underscore object.
  _.noConflict = function() {
    root._ = previousUnderscore;
    return this;
  };

  // Keep the identity function around for default iteratees.
  _.identity = function(value) {
    return value;
  };

  _.constant = function(value) {
    return function() {
      return value;
    };
  };

  _.noop = function(){};

  _.property = function(key) {
    return function(obj) {
      return obj[key];
    };
  };

  // Returns a predicate for checking whether an object has a given set of `key:value` pairs.
  _.matches = function(attrs) {
    var pairs = _.pairs(attrs), length = pairs.length;
    return function(obj) {
      if (obj == null) return !length;
      obj = new Object(obj);
      for (var i = 0; i < length; i++) {
        var pair = pairs[i], key = pair[0];
        if (pair[1] !== obj[key] || !(key in obj)) return false;
      }
      return true;
    };
  };

  // Run a function **n** times.
  _.times = function(n, iteratee, context) {
    var accum = Array(Math.max(0, n));
    iteratee = createCallback(iteratee, context, 1);
    for (var i = 0; i < n; i++) accum[i] = iteratee(i);
    return accum;
  };

  // Return a random integer between min and max (inclusive).
  _.random = function(min, max) {
    if (max == null) {
      max = min;
      min = 0;
    }
    return min + Math.floor(Math.random() * (max - min + 1));
  };

  // A (possibly faster) way to get the current timestamp as an integer.
  _.now = Date.now || function() {
    return new Date().getTime();
  };

   // List of HTML entities for escaping.
  var escapeMap = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#x27;',
    '`': '&#x60;'
  };
  var unescapeMap = _.invert(escapeMap);

  // Functions for escaping and unescaping strings to/from HTML interpolation.
  var createEscaper = function(map) {
    var escaper = function(match) {
      return map[match];
    };
    // Regexes for identifying a key that needs to be escaped
    var source = '(?:' + _.keys(map).join('|') + ')';
    var testRegexp = RegExp(source);
    var replaceRegexp = RegExp(source, 'g');
    return function(string) {
      string = string == null ? '' : '' + string;
      return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
    };
  };
  _.escape = createEscaper(escapeMap);
  _.unescape = createEscaper(unescapeMap);

  // If the value of the named `property` is a function then invoke it with the
  // `object` as context; otherwise, return it.
  _.result = function(object, property) {
    if (object == null) return void 0;
    var value = object[property];
    return _.isFunction(value) ? object[property]() : value;
  };

  // Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  _.uniqueId = function(prefix) {
    var id = ++idCounter + '';
    return prefix ? prefix + id : id;
  };

  // By default, Underscore uses ERB-style template delimiters, change the
  // following template settings to use alternative delimiters.
  _.templateSettings = {
    evaluate    : /<%([\s\S]+?)%>/g,
    interpolate : /<%=([\s\S]+?)%>/g,
    escape      : /<%-([\s\S]+?)%>/g
  };

  // When customizing `templateSettings`, if you don't want to define an
  // interpolation, evaluation or escaping regex, we need one that is
  // guaranteed not to match.
  var noMatch = /(.)^/;

  // Certain characters need to be escaped so that they can be put into a
  // string literal.
  var escapes = {
    "'":      "'",
    '\\':     '\\',
    '\r':     'r',
    '\n':     'n',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  var escaper = /\\|'|\r|\n|\u2028|\u2029/g;

  var escapeChar = function(match) {
    return '\\' + escapes[match];
  };

  // JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  // NB: `oldSettings` only exists for backwards compatibility.
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with a peer. \n    @sync_process_order = []\n    \n  #\n  # Execute a function _when_ we are connected. If not connected, wait until connected.\n  # @param f {Function} Will be executed on the PeerJs-Connector context.\n  #\n  whenSynced: (args)->\n    if @is_synced\n      args[0].apply this, args[1..]\n    else\n      @compute_when_synced.push args \n  \n  #\n  # Execute an function _when_ a message is received.\n  # @param f {Function} Will be executed on the PeerJs-Connector context. f will be called with (sender_id, broadcast {true|false}, message).\n  #\n  whenReceiving: (f)->\n    @receive_handlers.push f\n  \n  #\n  # Send a message to a (sub)-set of all connected peers.\n  # @param peers {Array<connection_ids>} A set of ids.\n  # @param message {Object} The message to send.\n  #\n  multicast: (peers, message)->\n    @whenSynced [_send, peers, message]\n  \n  #\n  # Send a message to one of the connected peers.\n  # @param peers {connection_id} A connection id.\n  # @param message {Object} The message to send.\n  #\n  unicast: (peer, message)->\n    @whenSynced [_send, peer, message]\n  \n  # \n  # Broadcast a message to all connected peers.\n  # @param message {Object} The message to broadcast.\n  # \n  broadcast: (message)->\n    @whenSynced [()=>\n      for peerid,peer of @connections\n        @_send peerid, message]\n \n  #\n  # Define how you want to handle the sync process of two users.\n  # This is a synchronous handshake. Every user will perform exactly the same actions at the same time. E.g.\n  # @example\n  #   whenSyncing(function(){ // first call must not have parameters!\n  #       return this.id; // Send the id of this connector.\n  #   },function(peerid){ // you receive the peerid of the other connections.\n  #       // you can do something with the peerid\n  #       // return \"you are my friend\"; // you could send another massage.\n  #   }); // this is the end of the sync process.\n  #\n  whenSyncing: ()->\n    for i in [(arguments.length-1)..0]\n      @sync_process_order.unshift arguments[i]\n\n\n\nmodule.exports = Connector\n","\n_ = require \"underscore\"\nConnector = require '../connector'\n\n#\n# A trivial Connector that simulates network delay.\n#\nclass TestConnector extends Connector\n\n  #\n  # @param id {String} Some unique id\n  # @param user_connectors {Array<TestConnector>} List of TestConnectors instances\n  #\n  constructor: (@id)->\n    super()\n    # If you think of operations, this will mirror the \n    # execiton order of operations (when a message is send, or received it is put into this)\n    @execution_order = []\n    # The messages are buffered under the name of teh sending user.\n    @receive_buffer = {}\n    @connections = {}\n\n    @whenReceiving (user, message)=>\n      @execution_order.push message\n    \n  # join another user connector\n  join: (conn)->\n    @_addConnection conn.id, conn\n    for cid,c of conn.connections\n      @_addConnection cid, c\n    @is_synced = true\n    for comp in @compute_when_synced\n      comp[0].apply @, comp[1..]\n    \n  \n  #\n  # @private\n  # This is a helper function that is only related to the peerjs connector. \n  # Connect to another peer.\n  _addConnection: (id, user_connector)->\n    if not @connections[id]?\n      data = null\n      user_data = null\n      for i in [0...@sync_process_order.length]\n        data_ = @sync_process_order[i].call @, user_data\n        user_data = user_connector.sync_process_order[0].call user_connector, data\n        data = data_\n      @connections[id]=user_connector\n      user_connector.connections[@id] = @\n      \n  #\n  # Get the ops in the execution order.\n  #\n  getOpsInExecutionOrder: ()->\n    @execution_order\n    \n  #\n  # Send a message to another peer\n  # @param {Operation} o The operation that was executed.\n  #\n  _send: (uid, message)->\n    rb = @connections[uid].receive_buffer\n    rb[@id] ?= []\n    rb[@id].push message\n\n  #\n  # Flush one operation from the line of a specific user.\n  #\n  flushOne: (uid)->\n    if @receive_buffer[uid]?.length > 0\n      message = @receive_buffer[uid].shift()\n      for f in @receive_handlers\n        f uid, message\n        \n  #\n  # Flush one operation on a random line.\n  #\n  flushOneRandom: ()->\n    connlist = for cid,c of @receive_buffer\n      cid\n    @flushOne connlist[(_.random 0, (connlist.length-1))]\n\n  #\n  # Flush all operations on every line.\n  #\n  flushAll: ()->\n    for n,messages of @receive_buffer\n      for message in messages\n        for f in @receive_handlers\n          f n, message\n    @receive_buffer = {}\n\n\nif window?\n  window.TestConnector = TestConnector\n\nif module?\n  module.exports = TestConnector\n","//     Underscore.js 1.7.0\n//     http://underscorejs.org\n//     (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n//     Underscore may be freely distributed under the MIT license.\n\n(function() {\n\n  // Baseline setup\n  // --------------\n\n  // Establish the root object, `window` in the browser, or `exports` on the server.\n  var root = this;\n\n  // Save the previous value of the `_` variable.\n  var previousUnderscore = root._;\n\n  // Save bytes in the minified (but not gzipped) version:\n  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;\n\n  // Create quick reference variables for speed access to core prototypes.\n  var\n    push             = ArrayProto.push,\n    slice            = ArrayProto.slice,\n    concat           = ArrayProto.concat,\n    toString         = ObjProto.toString,\n    hasOwnProperty   = ObjProto.hasOwnProperty;\n\n  // All **ECMAScript 5** native function implementations that we hope to use\n  // are declared here.\n  var\n    nativeIsArray      = Array.isArray,\n    nativeKeys         = Object.keys,\n    nativeBind         = FuncProto.bind;\n\n  // Create a safe reference to the Underscore object for use below.\n  var _ = function(obj) {\n    if (obj instanceof _) return obj;\n    if (!(this instanceof _)) return new _(obj);\n    this._wrapped = obj;\n  };\n\n  // Export the Underscore object for **Node.js**, with\n  // backwards-compatibility for the old `require()` API. If we're in\n  // the browser, add `_` as a global object.\n  if (typeof exports !== 'undefined') {\n    if (typeof module !== 'undefined' && module.exports) {\n      exports = module.exports = _;\n    }\n    exports._ = _;\n  } else {\n    root._ = _;\n  }\n\n  // Current version.\n  _.VERSION = '1.7.0';\n\n  // Internal function that returns an efficient (for current engines) version\n  // of the passed-in callback, to be repeatedly applied in other Underscore\n  // functions.\n  var createCallback = function(func, context, argCount) {\n    if (context === void 0) return func;\n    switch (argCount == null ? 3 : argCount) {\n      case 1: return function(value) {\n        return func.call(context, value);\n      };\n      case 2: return function(value, other) {\n        return func.call(context, value, other);\n      };\n      case 3: return function(value, index, collection) {\n        return func.call(context, value, index, collection);\n      };\n      case 4: return function(accumulator, value, index, collection) {\n        return func.call(context, accumulator, value, index, collection);\n      };\n    }\n    return function() {\n      return func.apply(context, arguments);\n    };\n  };\n\n  // A mostly-internal function to generate callbacks that can be applied\n  // to each element in a collection, returning the desired result — either\n  // identity, an arbitrary callback, a property matcher, or a property accessor.\n  _.iteratee = function(value, context, argCount) {\n    if (value == null) return _.identity;\n    if (_.isFunction(value)) return createCallback(value, context, argCount);\n    if (_.isObject(value)) return _.matches(value);\n    return _.property(value);\n  };\n\n  // Collection Functions\n  // --------------------\n\n  // The cornerstone, an `each` implementation, aka `forEach`.\n  // Handles raw objects in addition to array-likes. Treats all\n  // sparse array-likes as if they were dense.\n  _.each = _.forEach = function(obj, iteratee, context) {\n    if (obj == null) return obj;\n    iteratee = createCallback(iteratee, context);\n    var i, length = obj.length;\n    if (length === +length) {\n      for (i = 0; i < length; i++) {\n        iteratee(obj[i], i, obj);\n      }\n    } else {\n      var keys = _.keys(obj);\n      for (i = 0, length = keys.length; i < length; i++) {\n        iteratee(obj[keys[i]], keys[i], obj);\n      }\n    }\n    return obj;\n  };\n\n  // Return the results of applying the iteratee to each element.\n  _.map = _.collect = function(obj, iteratee, context) {\n    if (obj == null) return [];\n    iteratee = _.iteratee(iteratee, context);\n    var keys = obj.length !== +obj.length && _.keys(obj),\n        length = (keys || obj).length,\n        results = Array(length),\n        currentKey;\n    for (var index = 0; index < length; index++) {\n      currentKey = keys ? keys[index] : index;\n      results[index] = iteratee(obj[currentKey], currentKey, obj);\n    }\n    return results;\n  };\n\n  var reduceError = 'Reduce of empty array with no initial value';\n\n  // **Reduce** builds up a single result from a list of values, aka `inject`,\n  // or `foldl`.\n  _.reduce = _.foldl = _.inject = function(obj, iteratee, memo, context) {\n    if (obj == null) obj = [];\n    iteratee = createCallback(iteratee, context, 4);\n    var keys = obj.length !== +obj.length && _.keys(obj),\n        length = (keys || obj).length,\n        index = 0, currentKey;\n    if (arguments.length < 3) {\n      if (!length) throw new TypeError(reduceError);\n      memo = obj[keys ? keys[index++] : index++];\n    }\n    for (; index < length; index++) {\n      currentKey = keys ? keys[index] : index;\n      memo = iteratee(memo, obj[currentKey], currentKey, obj);\n    }\n    return memo;\n  };\n\n  // The right-associative version of reduce, also known as `foldr`.\n  _.reduceRight = _.foldr = function(obj, iteratee, memo, context) {\n    if (obj == null) obj = [];\n    iteratee = createCallback(iteratee, context, 4);\n    var keys = obj.length !== + obj.length && _.keys(obj),\n        index = (keys || obj).length,\n        currentKey;\n    if (arguments.length < 3) {\n      if (!index) throw new TypeError(reduceError);\n      memo = obj[keys ? keys[--index] : --index];\n    }\n    while (index--) {\n      currentKey = keys ? keys[index] : index;\n      memo = iteratee(memo, obj[currentKey], currentKey, obj);\n    }\n    return memo;\n  };\n\n  // Return the first value which passes a truth test. Aliased as `detect`.\n  _.find = _.detect = function(obj, predicate, context) {\n    var result;\n    predicate = _.iteratee(predicate, context);\n    _.some(obj, function(value, index, list) {\n      if (predicate(value, index, list)) {\n        result = value;\n        return true;\n      }\n    });\n    return result;\n  };\n\n  // Return all the elements that pass a truth test.\n  // Aliased as `select`.\n  _.filter = _.select = function(obj, predicate, context) {\n    var results = [];\n    if (obj == null) return results;\n    predicate = _.iteratee(predicate, context);\n    _.each(obj, function(value, index, list) {\n      if (predicate(value, index, list)) results.push(value);\n    });\n    return results;\n  };\n\n  // Return all the elements for which a truth test fails.\n  _.reject = function(obj, predicate, context) {\n    return _.filter(obj, _.negate(_.iteratee(predicate)), context);\n  };\n\n  // Determine whether all of the elements match a truth test.\n  // Aliased as `all`.\n  _.every = _.all = function(obj, predicate, context) {\n    if (obj == null) return true;\n    predicate = _.iteratee(predicate, context);\n    var keys = obj.length !== +obj.length && _.keys(obj),\n        length = (keys || obj).length,\n        index, currentKey;\n    for (index = 0; index < length; index++) {\n      currentKey = keys ? keys[index] : index;\n      if (!predicate(obj[currentKey], currentKey, obj)) return false;\n    }\n    return true;\n  };\n\n  // Determine if at least one element in the object matches a truth test.\n  // Aliased as `any`.\n  _.some = _.any = function(obj, predicate, context) {\n    if (obj == null) return false;\n    predicate = _.iteratee(predicate, context);\n    var keys = obj.length !== +obj.length && _.keys(obj),\n        length = (keys || obj).length,\n        index, currentKey;\n    for (index = 0; index < length; index++) {\n      currentKey = keys ? keys[index] : index;\n      if (predicate(obj[currentKey], currentKey, obj)) return true;\n    }\n    return false;\n  };\n\n  // Determine if the array or object contains a given value (using `===`).\n  // Aliased as `include`.\n  _.contains = _.include = function(obj, target) {\n    if (obj == null) return false;\n    if (obj.length !== +obj.length) obj = _.values(obj);\n    return _.indexOf(obj, target) >= 0;\n  };\n\n  // Invoke a method (with arguments) on every item in a collection.\n  _.invoke = function(obj, method) {\n    var args = slice.call(arguments, 2);\n    var isFunc = _.isFunction(method);\n    return _.map(obj, function(value) {\n      return (isFunc ? method : value[method]).apply(value, args);\n    });\n  };\n\n  // Convenience version of a common use case of `map`: fetching a property.\n  _.pluck = function(obj, key) {\n    return _.map(obj, _.property(key));\n  };\n\n  // Convenience version of a common use case of `filter`: selecting only objects\n  // containing specific `key:value` pairs.\n  _.where = function(obj, attrs) {\n    return _.filter(obj, _.matches(attrs));\n  };\n\n  // Convenience version of a common use case of `find`: getting the first object\n  // containing specific `key:value` pairs.\n  _.findWhere = function(obj, attrs) {\n    return _.find(obj, _.matches(attrs));\n  };\n\n  // Return the maximum element (or element-based computation).\n  _.max = function(obj, iteratee, context) {\n    var result = -Infinity, lastComputed = -Infinity,\n        value, computed;\n    if (iteratee == null && obj != null) {\n      obj = obj.length === +obj.length ? obj : _.values(obj);\n      for (var i = 0, length = obj.length; i < length; i++) {\n        value = obj[i];\n        if (value > result) {\n          result = value;\n        }\n      }\n    } else {\n      iteratee = _.iteratee(iteratee, context);\n      _.each(obj, function(value, index, list) {\n        computed = iteratee(value, index, list);\n        if (computed > lastComputed || computed === -Infinity && result === -Infinity) {\n          result = value;\n          lastComputed = computed;\n        }\n      });\n    }\n    return result;\n  };\n\n  // Return the minimum element (or element-based computation).\n  _.min = function(obj, iteratee, context) {\n    var result = Infinity, lastComputed = Infinity,\n        value, computed;\n    if (iteratee == null && obj != null) {\n      obj = obj.length === +obj.length ? obj : _.values(obj);\n      for (var i = 0, length = obj.length; i < length; i++) {\n        value = obj[i];\n        if (value < result) {\n          result = value;\n        }\n      }\n    } else {\n      iteratee = _.iteratee(iteratee, context);\n      _.each(obj, function(value, index, list) {\n        computed = iteratee(value, index, list);\n        if (computed < lastComputed || computed === Infinity && result === Infinity) {\n          result = value;\n          lastComputed = computed;\n        }\n      });\n    }\n    return result;\n  };\n\n  // Shuffle a collection, using the modern version of the\n  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).\n  _.shuffle = function(obj) {\n    var set = obj && obj.length === +obj.length ? obj : _.values(obj);\n    var length = set.length;\n    var shuffled = Array(length);\n    for (var index = 0, rand; index < length; index++) {\n      rand = _.random(0, index);\n      if (rand !== index) shuffled[index] = shuffled[rand];\n      shuffled[rand] = set[index];\n    }\n    return shuffled;\n  };\n\n  // Sample **n** random values from a collection.\n  // If **n** is not specified, returns a single random element.\n  // The internal `guard` argument allows it to work with `map`.\n  _.sample = function(obj, n, guard) {\n    if (n == null || guard) {\n      if (obj.length !== +obj.length) obj = _.values(obj);\n      return obj[_.random(obj.length - 1)];\n    }\n    return _.shuffle(obj).slice(0, Math.max(0, n));\n  };\n\n  // Sort the object's values by a criterion produced by an iteratee.\n  _.sortBy = function(obj, iteratee, context) {\n    iteratee = _.iteratee(iteratee, context);\n    return _.pluck(_.map(obj, function(value, index, list) {\n      return {\n        value: value,\n        index: index,\n        criteria: iteratee(value, index, list)\n      };\n    }).sort(function(left, right) {\n      var a = left.criteria;\n      var b = right.criteria;\n      if (a !== b) {\n        if (a > b || a === void 0) return 1;\n        if (a < b || b === void 0) return -1;\n      }\n      return left.index - right.index;\n    }), 'value');\n  };\n\n  // An internal function used for aggregate \"group by\" operations.\n  var group = function(behavior) {\n    return function(obj, iteratee, context) {\n      var result = {};\n      iteratee = _.iteratee(iteratee, context);\n      _.each(obj, function(value, index) {\n        var key = iteratee(value, index, obj);\n        behavior(result, value, key);\n      });\n      return result;\n    };\n  };\n\n  // Groups the object's values by a criterion. Pass either a string attribute\n  // to group by, or a function that returns the criterion.\n  _.groupBy = group(function(result, value, key) {\n    if (_.has(result, key)) result[key].push(value); else result[key] = [value];\n  });\n\n  // Indexes the object's values by a criterion, similar to `groupBy`, but for\n  // when you know that your index values will be unique.\n  _.indexBy = group(function(result, value, key) {\n    result[key] = value;\n  });\n\n  // Counts instances of an object that group by a certain criterion. Pass\n  // either a string attribute to count by, or a function that returns the\n  // criterion.\n  _.countBy = group(function(result, value, key) {\n    if (_.has(result, key)) result[key]++; else result[key] = 1;\n  });\n\n  // Use a comparator function to figure out the smallest index at which\n  // an object should be inserted so as to maintain order. Uses binary search.\n  _.sortedIndex = function(array, obj, iteratee, context) {\n    iteratee = _.iteratee(iteratee, context, 1);\n    var value = iteratee(obj);\n    var low = 0, high = array.length;\n    while (low < high) {\n      var mid = low + high >>> 1;\n      if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;\n    }\n    return low;\n  };\n\n  // Safely create a real, live array from anything iterable.\n  _.toArray = function(obj) {\n    if (!obj) return [];\n    if (_.isArray(obj)) return slice.call(obj);\n    if (obj.length === +obj.length) return _.map(obj, _.identity);\n    return _.values(obj);\n  };\n\n  // Return the number of elements in an object.\n  _.size = function(obj) {\n    if (obj == null) return 0;\n    return obj.length === +obj.length ? obj.length : _.keys(obj).length;\n  };\n\n  // Split a collection into two arrays: one whose elements all satisfy the given\n  // predicate, and one whose elements all do not satisfy the predicate.\n  _.partition = function(obj, predicate, context) {\n    predicate = _.iteratee(predicate, context);\n    var pass = [], fail = [];\n    _.each(obj, function(value, key, obj) {\n      (predicate(value, key, obj) ? pass : fail).push(value);\n    });\n    return [pass, fail];\n  };\n\n  // Array Functions\n  // ---------------\n\n  // Get the first element of an array. Passing **n** will return the first N\n  // values in the array. Aliased as `head` and `take`. The **guard** check\n  // allows it to work with `_.map`.\n  _.first = _.head = _.take = function(array, n, guard) {\n    if (array == null) return void 0;\n    if (n == null || guard) return array[0];\n    if (n < 0) return [];\n    return slice.call(array, 0, n);\n  };\n\n  // Returns everything but the last entry of the array. Especially useful on\n  // the arguments object. Passing **n** will return all the values in\n  // the array, excluding the last N. The **guard** check allows it to work with\n  // `_.map`.\n  _.initial = function(array, n, guard) {\n    return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));\n  };\n\n  // Get the last element of an array. Passing **n** will return the last N\n  // values in the array. The **guard** check allows it to work with `_.map`.\n  _.last = function(array, n, guard) {\n    if (array == null) return void 0;\n    if (n == null || guard) return array[array.length - 1];\n    return slice.call(array, Math.max(array.length - n, 0));\n  };\n\n  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.\n  // Especially useful on the arguments object. Passing an **n** will return\n  // the rest N values in the array. The **guard**\n  // check allows it to work with `_.map`.\n  _.rest = _.tail = _.drop = function(array, n, guard) {\n    return slice.call(array, n == null || guard ? 1 : n);\n  };\n\n  // Trim out all falsy values from an array.\n  _.compact = function(array) {\n    return _.filter(array, _.identity);\n  };\n\n  // Internal implementation of a recursive `flatten` function.\n  var flatten = function(input, shallow, strict, output) {\n    if (shallow && _.every(input, _.isArray)) {\n      return concat.apply(output, input);\n    }\n    for (var i = 0, length = input.length; i < length; i++) {\n      var value = input[i];\n      if (!_.isArray(value) && !_.isArguments(value)) {\n        if (!strict) output.push(value);\n      } else if (shallow) {\n        push.apply(output, value);\n      } else {\n        flatten(value, shallow, strict, output);\n      }\n    }\n    return output;\n  };\n\n  // Flatten out an array, either recursively (by default), or just one level.\n  _.flatten = function(array, shallow) {\n    return flatten(array, shallow, false, []);\n  };\n\n  // Return a version of the array that does not contain the specified value(s).\n  _.without = function(array) {\n    return _.difference(array, slice.call(arguments, 1));\n  };\n\n  // Produce a duplicate-free version of the array. If the array has already\n  // been sorted, you have the option of using a faster algorithm.\n  // Aliased as `unique`.\n  _.uniq = _.unique = function(array, isSorted, iteratee, context) {\n    if (array == null) return [];\n    if (!_.isBoolean(isSorted)) {\n      context = iteratee;\n      iteratee = isSorted;\n      isSorted = false;\n    }\n    if (iteratee != null) iteratee = _.iteratee(iteratee, context);\n    var result = [];\n    var seen = [];\n    for (var i = 0, length = array.length; i < length; i++) {\n      var value = array[i];\n      if (isSorted) {\n        if (!i || seen !== value) result.push(value);\n        seen = value;\n      } else if (iteratee) {\n        var computed = iteratee(value, i, array);\n        if (_.indexOf(seen, computed) < 0) {\n          seen.push(computed);\n          result.push(value);\n        }\n      } else if (_.indexOf(result, value) < 0) {\n        result.push(value);\n      }\n    }\n    return result;\n  };\n\n  // Produce an array that contains the union: each distinct element from all of\n  // the passed-in arrays.\n  _.union = function() {\n    return _.uniq(flatten(arguments, true, true, []));\n  };\n\n  // Produce an array that contains every item shared between all the\n  // passed-in arrays.\n  _.intersection = function(array) {\n    if (array == null) return [];\n    var result = [];\n    var argsLength = arguments.length;\n    for (var i = 0, length = array.length; i < length; i++) {\n      var item = array[i];\n      if (_.contains(result, item)) continue;\n      for (var j = 1; j < argsLength; j++) {\n        if (!_.contains(arguments[j], item)) break;\n      }\n      if (j === argsLength) result.push(item);\n    }\n    return result;\n  };\n\n  // Take the difference between one array and a number of other arrays.\n  // Only the elements present in just the first array will remain.\n  _.difference = function(array) {\n    var rest = flatten(slice.call(arguments, 1), true, true, []);\n    return _.filter(array, function(value){\n      return !_.contains(rest, value);\n    });\n  };\n\n  // Zip together multiple lists into a single array -- elements that share\n  // an index go together.\n  _.zip = function(array) {\n    if (array == null) return [];\n    var length = _.max(arguments, 'length').length;\n    var results = Array(length);\n    for (var i = 0; i < length; i++) {\n      results[i] = _.pluck(arguments, i);\n    }\n    return results;\n  };\n\n  // Converts lists into objects. Pass either a single array of `[key, value]`\n  // pairs, or two parallel arrays of the same length -- one of keys, and one of\n  // the corresponding values.\n  _.object = function(list, values) {\n    if (list == null) return {};\n    var result = {};\n    for (var i = 0, length = list.length; i < length; i++) {\n      if (values) {\n        result[list[i]] = values[i];\n      } else {\n        result[list[i][0]] = list[i][1];\n      }\n    }\n    return result;\n  };\n\n  // Return the position of the first occurrence of an item in an array,\n  // or -1 if the item is not included in the array.\n  // If the array is large and already in sort order, pass `true`\n  // for **isSorted** to use binary search.\n  _.indexOf = function(array, item, isSorted) {\n    if (array == null) return -1;\n    var i = 0, length = array.length;\n    if (isSorted) {\n      if (typeof isSorted == 'number') {\n        i = isSorted < 0 ? Math.max(0, length + isSorted) : isSorted;\n      } else {\n        i = _.sortedIndex(array, item);\n        return array[i] === item ? i : -1;\n      }\n    }\n    for (; i < length; i++) if (array[i] === item) return i;\n    return -1;\n  };\n\n  _.lastIndexOf = function(array, item, from) {\n    if (array == null) return -1;\n    var idx = array.length;\n    if (typeof from == 'number') {\n      idx = from < 0 ? idx + from + 1 : Math.min(idx, from + 1);\n    }\n    while (--idx >= 0) if (array[idx] === item) return idx;\n    return -1;\n  };\n\n  // Generate an integer Array containing an arithmetic progression. A port of\n  // the native Python `range()` function. See\n  // [the Python documentation](http://docs.python.org/library/functions.html#range).\n  _.range = function(start, stop, step) {\n    if (arguments.length <= 1) {\n      stop = start || 0;\n      start = 0;\n    }\n    step = step || 1;\n\n    var length = Math.max(Math.ceil((stop - start) / step), 0);\n    var range = Array(length);\n\n    for (var idx = 0; idx < length; idx++, start += step) {\n      range[idx] = start;\n    }\n\n    return range;\n  };\n\n  // Function (ahem) Functions\n  // ------------------\n\n  // Reusable constructor function for prototype setting.\n  var Ctor = function(){};\n\n  // Create a function bound to a given object (assigning `this`, and arguments,\n  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if\n  // available.\n  _.bind = function(func, context) {\n    var args, bound;\n    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));\n    if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');\n    args = slice.call(arguments, 2);\n    bound = function() {\n      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));\n      Ctor.prototype = func.prototype;\n      var self = new Ctor;\n      Ctor.prototype = null;\n      var result = func.apply(self, args.concat(slice.call(arguments)));\n      if (_.isObject(result)) return result;\n      return self;\n    };\n    return bound;\n  };\n\n  // Partially apply a function by creating a version that has had some of its\n  // arguments pre-filled, without changing its dynamic `this` context. _ acts\n  // as a placeholder, allowing any combination of arguments to be pre-filled.\n  _.partial = function(func) {\n    var boundArgs = slice.call(arguments, 1);\n    return function() {\n      var position = 0;\n      var args = boundArgs.slice();\n      for (var i = 0, length = args.length; i < length; i++) {\n        if (args[i] === _) args[i] = arguments[position++];\n      }\n      while (position < arguments.length) args.push(arguments[position++]);\n      return func.apply(this, args);\n    };\n  };\n\n  // Bind a number of an object's methods to that object. Remaining arguments\n  // are the method names to be bound. Useful for ensuring that all callbacks\n  // defined on an object belong to it.\n  _.bindAll = function(obj) {\n    var i, length = arguments.length, key;\n    if (length <= 1) throw new Error('bindAll must be passed function names');\n    for (i = 1; i < length; i++) {\n      key = arguments[i];\n      obj[key] = _.bind(obj[key], obj);\n    }\n    return obj;\n  };\n\n  // Memoize an expensive function by storing its results.\n  _.memoize = function(func, hasher) {\n    var memoize = function(key) {\n      var cache = memoize.cache;\n      var address = hasher ? hasher.apply(this, arguments) : key;\n      if (!_.has(cache, address)) cache[address] = func.apply(this, arguments);\n      return cache[address];\n    };\n    memoize.cache = {};\n    return memoize;\n  };\n\n  // Delays a function for the given number of milliseconds, and then calls\n  // it with the arguments supplied.\n  _.delay = function(func, wait) {\n    var args = slice.call(arguments, 2);\n    return setTimeout(function(){\n      return func.apply(null, args);\n    }, wait);\n  };\n\n  // Defers a function, scheduling it to run after the current call stack has\n  // cleared.\n  _.defer = function(func) {\n    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));\n  };\n\n  // Returns a function, that, when invoked, will only be triggered at most once\n  // during a given window of time. Normally, the throttled function will run\n  // as much as it can, without ever going more than once per `wait` duration;\n  // but if you'd like to disable the execution on the leading edge, pass\n  // `{leading: false}`. To disable execution on the trailing edge, ditto.\n  _.throttle = function(func, wait, options) {\n    var context, args, result;\n    var timeout = null;\n    var previous = 0;\n    if (!options) options = {};\n    var later = function() {\n      previous = options.leading === false ? 0 : _.now();\n      timeout = null;\n      result = func.apply(context, args);\n      if (!timeout) context = args = null;\n    };\n    return function() {\n      var now = _.now();\n      if (!previous && options.leading === false) previous = now;\n      var remaining = wait - (now - previous);\n      context = this;\n      args = arguments;\n      if (remaining <= 0 || remaining > wait) {\n        clearTimeout(timeout);\n        timeout = null;\n        previous = now;\n        result = func.apply(context, args);\n        if (!timeout) context = args = null;\n      } else if (!timeout && options.trailing !== false) {\n        timeout = setTimeout(later, remaining);\n      }\n      return result;\n    };\n  };\n\n  // Returns a function, that, as long as it continues to be invoked, will not\n  // be triggered. The function will be called after it stops being called for\n  // N milliseconds. If `immediate` is passed, trigger the function on the\n  // leading edge, instead of the trailing.\n  _.debounce = function(func, wait, immediate) {\n    var timeout, args, context, timestamp, result;\n\n    var later = function() {\n      var last = _.now() - timestamp;\n\n      if (last < wait && last > 0) {\n        timeout = setTimeout(later, wait - last);\n      } else {\n        timeout = null;\n        if (!immediate) {\n          result = func.apply(context, args);\n          if (!timeout) context = args = null;\n        }\n      }\n    };\n\n    return function() {\n      context = this;\n      args = arguments;\n      timestamp = _.now();\n      var callNow = immediate && !timeout;\n      if (!timeout) timeout = setTimeout(later, wait);\n      if (callNow) {\n        result = func.apply(context, args);\n        context = args = null;\n      }\n\n      return result;\n    };\n  };\n\n  // Returns the first function passed as an argument to the second,\n  // allowing you to adjust arguments, run code before and after, and\n  // conditionally execute the original function.\n  _.wrap = function(func, wrapper) {\n    return _.partial(wrapper, func);\n  };\n\n  // Returns a negated version of the passed-in predicate.\n  _.negate = function(predicate) {\n    return function() {\n      return !predicate.apply(this, arguments);\n    };\n  };\n\n  // Returns a function that is the composition of a list of functions, each\n  // consuming the return value of the function that follows.\n  _.compose = function() {\n    var args = arguments;\n    var start = args.length - 1;\n    return function() {\n      var i = start;\n      var result = args[start].apply(this, arguments);\n      while (i--) result = args[i].call(this, result);\n      return result;\n    };\n  };\n\n  // Returns a function that will only be executed after being called N times.\n  _.after = function(times, func) {\n    return function() {\n      if (--times < 1) {\n        return func.apply(this, arguments);\n      }\n    };\n  };\n\n  // Returns a function that will only be executed before being called N times.\n  _.before = function(times, func) {\n    var memo;\n    return function() {\n      if (--times > 0) {\n        memo = func.apply(this, arguments);\n      } else {\n        func = null;\n      }\n      return memo;\n    };\n  };\n\n  // Returns a function that will be executed at most one time, no matter how\n  // often you call it. Useful for lazy initialization.\n  _.once = _.partial(_.before, 2);\n\n  // Object Functions\n  // ----------------\n\n  // Retrieve the names of an object's properties.\n  // Delegates to **ECMAScript 5**'s native `Object.keys`\n  _.keys = function(obj) {\n    if (!_.isObject(obj)) return [];\n    if (nativeKeys) return nativeKeys(obj);\n    var keys = [];\n    for (var key in obj) if (_.has(obj, key)) keys.push(key);\n    return keys;\n  };\n\n  // Retrieve the values of an object's properties.\n  _.values = function(obj) {\n    var keys = _.keys(obj);\n    var length = keys.length;\n    var values = Array(length);\n    for (var i = 0; i < length; i++) {\n      values[i] = obj[keys[i]];\n    }\n    return values;\n  };\n\n  // Convert an object into a list of `[key, value]` pairs.\n  _.pairs = function(obj) {\n    var keys = _.keys(obj);\n    var length = keys.length;\n    var pairs = Array(length);\n    for (var i = 0; i < length; i++) {\n      pairs[i] = [keys[i], obj[keys[i]]];\n    }\n    return pairs;\n  };\n\n  // Invert the keys and values of an object. The values must be serializable.\n  _.invert = function(obj) {\n    var result = {};\n    var keys = _.keys(obj);\n    for (var i = 0, length = keys.length; i < length; i++) {\n      result[obj[keys[i]]] = keys[i];\n    }\n    return result;\n  };\n\n  // Return a sorted list of the function names available on the object.\n  // Aliased as `methods`\n  _.functions = _.methods = function(obj) {\n    var names = [];\n    for (var key in obj) {\n      if (_.isFunction(obj[key])) names.push(key);\n    }\n    return names.sort();\n  };\n\n  // Extend a given object with all the properties in passed-in object(s).\n  _.extend = function(obj) {\n    if (!_.isObject(obj)) return obj;\n    var source, prop;\n    for (var i = 1, length = arguments.length; i < length; i++) {\n      source = arguments[i];\n      for (prop in source) {\n        if (hasOwnProperty.call(source, prop)) {\n            obj[prop] = source[prop];\n        }\n      }\n    }\n    return obj;\n  };\n\n  // Return a copy of the object only containing the whitelisted properties.\n  _.pick = function(obj, iteratee, context) {\n    var result = {}, key;\n    if (obj == null) return result;\n    if (_.isFunction(iteratee)) {\n      iteratee = createCallback(iteratee, context);\n      for (key in obj) {\n        var value = obj[key];\n        if (iteratee(value, key, obj)) result[key] = value;\n      }\n    } else {\n      var keys = concat.apply([], slice.call(arguments, 1));\n      obj = new Object(obj);\n      for (var i = 0, length = keys.length; i < length; i++) {\n        key = keys[i];\n        if (key in obj) result[key] = obj[key];\n      }\n    }\n    return result;\n  };\n\n   // Return a copy of the object without the blacklisted properties.\n  _.omit = function(obj, iteratee, context) {\n    if (_.isFunction(iteratee)) {\n      iteratee = _.negate(iteratee);\n    } else {\n      var keys = _.map(concat.apply([], slice.call(arguments, 1)), String);\n      iteratee = function(value, key) {\n        return !_.contains(keys, key);\n      };\n    }\n    return _.pick(obj, iteratee, context);\n  };\n\n  // Fill in a given object with default properties.\n  _.defaults = function(obj) {\n    if (!_.isObject(obj)) return obj;\n    for (var i = 1, length = arguments.length; i < length; i++) {\n      var source = arguments[i];\n      for (var prop in source) {\n        if (obj[prop] === void 0) obj[prop] = source[prop];\n      }\n    }\n    return obj;\n  };\n\n  // Create a (shallow-cloned) duplicate of an object.\n  _.clone = function(obj) {\n    if (!_.isObject(obj)) return obj;\n    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);\n  };\n\n  // Invokes interceptor with the obj, and then returns obj.\n  // The primary purpose of this method is to \"tap into\" a method chain, in\n  // order to perform operations on intermediate results within the chain.\n  _.tap = function(obj, interceptor) {\n    interceptor(obj);\n    return obj;\n  };\n\n  // Internal recursive comparison function for `isEqual`.\n  var eq = function(a, b, aStack, bStack) {\n    // Identical objects are equal. `0 === -0`, but they aren't identical.\n    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).\n    if (a === b) return a !== 0 || 1 / a === 1 / b;\n    // A strict comparison is necessary because `null == undefined`.\n    if (a == null || b == null) return a === b;\n    // Unwrap any wrapped objects.\n    if (a instanceof _) a = a._wrapped;\n    if (b instanceof _) b = b._wrapped;\n    // Compare `[[Class]]` names.\n    var className = toString.call(a);\n    if (className !== toString.call(b)) return false;\n    switch (className) {\n      // Strings, numbers, regular expressions, dates, and booleans are compared by value.\n      case '[object RegExp]':\n      // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')\n      case '[object String]':\n        // Primitives and their corresponding object wrappers are equivalent; thus, `\"5\"` is\n        // equivalent to `new String(\"5\")`.\n        return '' + a === '' + b;\n      case '[object Number]':\n        // `NaN`s are equivalent, but non-reflexive.\n        // Object(NaN) is equivalent to NaN\n        if (+a !== +a) return +b !== +b;\n        // An `egal` comparison is performed for other numeric values.\n        return +a === 0 ? 1 / +a === 1 / b : +a === +b;\n      case '[object Date]':\n      case '[object Boolean]':\n        // Coerce dates and booleans to numeric primitive values. Dates are compared by their\n        // millisecond representations. Note that invalid dates with millisecond representations\n        // of `NaN` are not equivalent.\n        return +a === +b;\n    }\n    if (typeof a != 'object' || typeof b != 'object') return false;\n    // Assume equality for cyclic structures. The algorithm for detecting cyclic\n    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.\n    var length = aStack.length;\n    while (length--) {\n      // Linear search. Performance is inversely proportional to the number of\n      // unique nested structures.\n      if (aStack[length] === a) return bStack[length] === b;\n    }\n    // Objects with different constructors are not equivalent, but `Object`s\n    // from different frames are.\n    var aCtor = a.constructor, bCtor = b.constructor;\n    if (\n      aCtor !== bCtor &&\n      // Handle Object.create(x) cases\n      'constructor' in a && 'constructor' in b &&\n      !(_.isFunction(aCtor) && aCtor instanceof aCtor &&\n        _.isFunction(bCtor) && bCtor instanceof bCtor)\n    ) {\n      return false;\n    }\n    // Add the first object to the stack of traversed objects.\n    aStack.push(a);\n    bStack.push(b);\n    var size, result;\n    // Recursively compare objects and arrays.\n    if (className === '[object Array]') {\n      // Compare array lengths to determine if a deep comparison is necessary.\n      size = a.length;\n      result = size === b.length;\n      if (result) {\n        // Deep compare the contents, ignoring non-numeric properties.\n        while (size--) {\n          if (!(result = eq(a[size], b[size], aStack, bStack))) break;\n        }\n      }\n    } else {\n      // Deep compare objects.\n      var keys = _.keys(a), key;\n      size = keys.length;\n      // Ensure that both objects contain the same number of properties before comparing deep equality.\n      result = _.keys(b).length === size;\n      if (result) {\n        while (size--) {\n          // Deep compare each member\n          key = keys[size];\n          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;\n        }\n      }\n    }\n    // Remove the first object from the stack of traversed objects.\n    aStack.pop();\n    bStack.pop();\n    return result;\n  };\n\n  // Perform a deep comparison to check if two objects are equal.\n  _.isEqual = function(a, b) {\n    return eq(a, b, [], []);\n  };\n\n  // Is a given array, string, or object empty?\n  // An \"empty\" object has no enumerable own-properties.\n  _.isEmpty = function(obj) {\n    if (obj == null) return true;\n    if (_.isArray(obj) || _.isString(obj) || _.isArguments(obj)) return obj.length === 0;\n    for (var key in obj) if (_.has(obj, key)) return false;\n    return true;\n  };\n\n  // Is a given value a DOM element?\n  _.isElement = function(obj) {\n    return !!(obj && obj.nodeType === 1);\n  };\n\n  // Is a given value an array?\n  // Delegates to ECMA5's native Array.isArray\n  _.isArray = nativeIsArray || function(obj) {\n    return toString.call(obj) === '[object Array]';\n  };\n\n  // Is a given variable an object?\n  _.isObject = function(obj) {\n    var type = typeof obj;\n    return type === 'function' || type === 'object' && !!obj;\n  };\n\n  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.\n  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {\n    _['is' + name] = function(obj) {\n      return toString.call(obj) === '[object ' + name + ']';\n    };\n  });\n\n  // Define a fallback version of the method in browsers (ahem, IE), where\n  // there isn't any inspectable \"Arguments\" type.\n  if (!_.isArguments(arguments)) {\n    _.isArguments = function(obj) {\n      return _.has(obj, 'callee');\n    };\n  }\n\n  // Optimize `isFunction` if appropriate. Work around an IE 11 bug.\n  if (typeof /./ !== 'function') {\n    _.isFunction = function(obj) {\n      return typeof obj == 'function' || false;\n    };\n  }\n\n  // Is a given object a finite number?\n  _.isFinite = function(obj) {\n    return isFinite(obj) && !isNaN(parseFloat(obj));\n  };\n\n  // Is the given value `NaN`? (NaN is the only number which does not equal itself).\n  _.isNaN = function(obj) {\n    return _.isNumber(obj) && obj !== +obj;\n  };\n\n  // Is a given value a boolean?\n  _.isBoolean = function(obj) {\n    return obj === true || obj === false || toString.call(obj) === '[object Boolean]';\n  };\n\n  // Is a given value equal to null?\n  _.isNull = function(obj) {\n    return obj === null;\n  };\n\n  // Is a given variable undefined?\n  _.isUndefined = function(obj) {\n    return obj === void 0;\n  };\n\n  // Shortcut function for checking if an object has a given property directly\n  // on itself (in other words, not on a prototype).\n  _.has = function(obj, key) {\n    return obj != null && hasOwnProperty.call(obj, key);\n  };\n\n  // Utility Functions\n  // -----------------\n\n  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its\n  // previous owner. Returns a reference to the Underscore object.\n  _.noConflict = function() {\n    root._ = previousUnderscore;\n    return this;\n  };\n\n  // Keep the identity function around for default iteratees.\n  _.identity = function(value) {\n    return value;\n  };\n\n  _.constant = function(value) {\n    return function() {\n      return value;\n    };\n  };\n\n  _.noop = function(){};\n\n  _.property = function(key) {\n    return function(obj) {\n      return obj[key];\n    };\n  };\n\n  // Returns a predicate for checking whether an object has a given set of `key:value` pairs.\n  _.matches = function(attrs) {\n    var pairs = _.pairs(attrs), length = pairs.length;\n    return function(obj) {\n      if (obj == null) return !length;\n      obj = new Object(obj);\n      for (var i = 0; i < length; i++) {\n        var pair = pairs[i], key = pair[0];\n        if (pair[1] !== obj[key] || !(key in obj)) return false;\n      }\n      return true;\n    };\n  };\n\n  // Run a function **n** times.\n  _.times = function(n, iteratee, context) {\n    var accum = Array(Math.max(0, n));\n    iteratee = createCallback(iteratee, context, 1);\n    for (var i = 0; i < n; i++) accum[i] = iteratee(i);\n    return accum;\n  };\n\n  // Return a random integer between min and max (inclusive).\n  _.random = function(min, max) {\n    if (max == null) {\n      max = min;\n      min = 0;\n    }\n    return min + Math.floor(Math.random() * (max - min + 1));\n  };\n\n  // A (possibly faster) way to get the current timestamp as an integer.\n  _.now = Date.now || function() {\n    return new Date().getTime();\n  };\n\n   // List of HTML entities for escaping.\n  var escapeMap = {\n    '&': '&amp;',\n    '<': '&lt;',\n    '>': '&gt;',\n    '\"': '&quot;',\n    \"'\": '&#x27;',\n    '`': '&#x60;'\n  };\n  var unescapeMap = _.invert(escapeMap);\n\n  // Functions for escaping and unescaping strings to/from HTML interpolation.\n  var createEscaper = function(map) {\n    var escaper = function(match) {\n      return map[match];\n    };\n    // Regexes for identifying a key that needs to be escaped\n    var source = '(?:' + _.keys(map).join('|') + ')';\n    var testRegexp = RegExp(source);\n    var replaceRegexp = RegExp(source, 'g');\n    return function(string) {\n      string = string == null ? '' : '' + string;\n      return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;\n    };\n  };\n  _.escape = createEscaper(escapeMap);\n  _.unescape = createEscaper(unescapeMap);\n\n  // If the value of the named `property` is a function then invoke it with the\n  // `object` as context; otherwise, return it.\n  _.result = function(object, property) {\n    if (object == null) return void 0;\n    var value = object[property];\n    return _.isFunction(value) ? object[property]() : value;\n  };\n\n  // Generate a unique integer id (unique within the entire client session).\n  // Useful for temporary DOM ids.\n  var idCounter = 0;\n  _.uniqueId = function(prefix) {\n    var id = ++idCounter + '';\n    return prefix ? prefix + id : id;\n  };\n\n  // By default, Underscore uses ERB-style template delimiters, change the\n  // following template settings to use alternative delimiters.\n  _.templateSettings = {\n    evaluate    : /<%([\\s\\S]+?)%>/g,\n    interpolate : /<%=([\\s\\S]+?)%>/g,\n    escape      : /<%-([\\s\\S]+?)%>/g\n  };\n\n  // When customizing `templateSettings`, if you don't want to define an\n  // interpolation, evaluation or escaping regex, we need one that is\n  // guaranteed not to match.\n  var noMatch = /(.)^/;\n\n  // Certain characters need to be escaped so that they can be put into a\n  // string literal.\n  var escapes = {\n    \"'\":      \"'\",\n    '\\\\':     '\\\\',\n    '\\r':     'r',\n    '\\n':     'n',\n    '\\u2028': 'u2028',\n    '\\u2029': 'u2029'\n  };\n\n  var escaper = /\\\\|'|\\r|\\n|\\u2028|\\u2029/g;\n\n  var escapeChar = function(match) {\n    return '\\\\' + escapes[match];\n  };\n\n  // JavaScript micro-templating, similar to John Resig's implementation.\n  // Underscore templating handles arbitrary delimiters, preserves whitespace,\n  // and correctly escapes quotes within interpolated code.\n  // NB: `oldSettings` only exists for backwards compatibility.\n  _.template = function(text, settings, oldSettings) {\n    if (!settings && oldSettings) settings = oldSettings;\n    settings = _.defaults({}, settings, _.templateSettings);\n\n    // Combine delimiters into one regular expression via alternation.\n    var matcher = RegExp([\n      (settings.escape || noMatch).source,\n      (settings.interpolate || noMatch).source,\n      (settings.evaluate || noMatch).source\n    ].join('|') + '|$', 'g');\n\n    // Compile the template source, escaping string literals appropriately.\n    var index = 0;\n    var source = \"__p+='\";\n    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {\n      source += text.slice(index, offset).replace(escaper, escapeChar);\n      index = offset + match.length;\n\n      if (escape) {\n        source += \"'+\\n((__t=(\" + escape + \"))==null?'':_.escape(__t))+\\n'\";\n      } else if (interpolate) {\n        source += \"'+\\n((__t=(\" + interpolate + \"))==null?'':__t)+\\n'\";\n      } else if (evaluate) {\n        source += \"';\\n\" + evaluate + \"\\n__p+='\";\n      }\n\n      // Adobe VMs need the match returned to produce the correct offest.\n      return match;\n    });\n    source += \"';\\n\";\n\n    // If a variable is not specified, place data values in local scope.\n    if (!settings.variable) source = 'with(obj||{}){\\n' + source + '}\\n';\n\n    source = \"var __t,__p='',__j=Array.prototype.join,\" +\n      \"print=function(){__p+=__j.call(arguments,'');};\\n\" +\n      source + 'return __p;\\n';\n\n    try {\n      var render = new Function(settings.variable || 'obj', '_', source);\n    } catch (e) {\n      e.source = source;\n      throw e;\n    }\n\n    var template = function(data) {\n      return render.call(this, data, _);\n    };\n\n    // Provide the compiled source as a convenience for precompilation.\n    var argument = settings.variable || 'obj';\n    template.source = 'function(' + argument + '){\\n' + source + '}';\n\n    return template;\n  };\n\n  // Add a \"chain\" function. Start chaining a wrapped Underscore object.\n  _.chain = function(obj) {\n    var instance = _(obj);\n    instance._chain = true;\n    return instance;\n  };\n\n  // OOP\n  // ---------------\n  // If Underscore is called as a function, it returns a wrapped object that\n  // can be used OO-style. This wrapper holds altered versions of all the\n  // underscore functions. Wrapped objects may be chained.\n\n  // Helper function to continue chaining intermediate results.\n  var result = function(obj) {\n    return this._chain ? _(obj).chain() : obj;\n  };\n\n  // Add your own custom functions to the Underscore object.\n  _.mixin = function(obj) {\n    _.each(_.functions(obj), function(name) {\n      var func = _[name] = obj[name];\n      _.prototype[name] = function() {\n        var args = [this._wrapped];\n        push.apply(args, arguments);\n        return result.call(this, func.apply(_, args));\n      };\n    });\n  };\n\n  // Add all of the Underscore functions to the wrapper object.\n  _.mixin(_);\n\n  // Add all mutator Array functions to the wrapper.\n  _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {\n    var method = ArrayProto[name];\n    _.prototype[name] = function() {\n      var obj = this._wrapped;\n      method.apply(obj, arguments);\n      if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];\n      return result.call(this, obj);\n    };\n  });\n\n  // Add all accessor Array functions to the wrapper.\n  _.each(['concat', 'join', 'slice'], function(name) {\n    var method = ArrayProto[name];\n    _.prototype[name] = function() {\n      return result.call(this, method.apply(this._wrapped, arguments));\n    };\n  });\n\n  // Extracts the result from a wrapped and chained object.\n  _.prototype.value = function() {\n    return this._wrapped;\n  };\n\n  // AMD registration happens at the end for compatibility with AMD loaders\n  // that may not enforce next-turn semantics on modules. Even though general\n  // practice for AMD registration is to be anonymous, underscore registers\n  // as a named module because, like jQuery, it is a base library that is\n  // popular enough to be bundled in a third party lib, but not be part of\n  // an AMD load request. Those cases could generate an error when an\n  // anonymous define() is called outside of a loader request.\n  if (typeof define === 'function' && define.amd) {\n    define('underscore', [], function() {\n      return _;\n    });\n  }\n}.call(this));\n"]}