Index: node_modules/eventemitter3/index.js
===================================================================
--- node_modules/eventemitter3/index.js	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/eventemitter3/index.js	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,336 @@
+'use strict';
+
+var has = Object.prototype.hasOwnProperty
+  , prefix = '~';
+
+/**
+ * Constructor to create a storage for our `EE` objects.
+ * An `Events` instance is a plain object whose properties are event names.
+ *
+ * @constructor
+ * @private
+ */
+function Events() {}
+
+//
+// We try to not inherit from `Object.prototype`. In some engines creating an
+// instance in this way is faster than calling `Object.create(null)` directly.
+// If `Object.create(null)` is not supported we prefix the event names with a
+// character to make sure that the built-in object properties are not
+// overridden or used as an attack vector.
+//
+if (Object.create) {
+  Events.prototype = Object.create(null);
+
+  //
+  // This hack is needed because the `__proto__` property is still inherited in
+  // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.
+  //
+  if (!new Events().__proto__) prefix = false;
+}
+
+/**
+ * Representation of a single event listener.
+ *
+ * @param {Function} fn The listener function.
+ * @param {*} context The context to invoke the listener with.
+ * @param {Boolean} [once=false] Specify if the listener is a one-time listener.
+ * @constructor
+ * @private
+ */
+function EE(fn, context, once) {
+  this.fn = fn;
+  this.context = context;
+  this.once = once || false;
+}
+
+/**
+ * Add a listener for a given event.
+ *
+ * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.
+ * @param {(String|Symbol)} event The event name.
+ * @param {Function} fn The listener function.
+ * @param {*} context The context to invoke the listener with.
+ * @param {Boolean} once Specify if the listener is a one-time listener.
+ * @returns {EventEmitter}
+ * @private
+ */
+function addListener(emitter, event, fn, context, once) {
+  if (typeof fn !== 'function') {
+    throw new TypeError('The listener must be a function');
+  }
+
+  var listener = new EE(fn, context || emitter, once)
+    , evt = prefix ? prefix + event : event;
+
+  if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;
+  else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);
+  else emitter._events[evt] = [emitter._events[evt], listener];
+
+  return emitter;
+}
+
+/**
+ * Clear event by name.
+ *
+ * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.
+ * @param {(String|Symbol)} evt The Event name.
+ * @private
+ */
+function clearEvent(emitter, evt) {
+  if (--emitter._eventsCount === 0) emitter._events = new Events();
+  else delete emitter._events[evt];
+}
+
+/**
+ * Minimal `EventEmitter` interface that is molded against the Node.js
+ * `EventEmitter` interface.
+ *
+ * @constructor
+ * @public
+ */
+function EventEmitter() {
+  this._events = new Events();
+  this._eventsCount = 0;
+}
+
+/**
+ * Return an array listing the events for which the emitter has registered
+ * listeners.
+ *
+ * @returns {Array}
+ * @public
+ */
+EventEmitter.prototype.eventNames = function eventNames() {
+  var names = []
+    , events
+    , name;
+
+  if (this._eventsCount === 0) return names;
+
+  for (name in (events = this._events)) {
+    if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);
+  }
+
+  if (Object.getOwnPropertySymbols) {
+    return names.concat(Object.getOwnPropertySymbols(events));
+  }
+
+  return names;
+};
+
+/**
+ * Return the listeners registered for a given event.
+ *
+ * @param {(String|Symbol)} event The event name.
+ * @returns {Array} The registered listeners.
+ * @public
+ */
+EventEmitter.prototype.listeners = function listeners(event) {
+  var evt = prefix ? prefix + event : event
+    , handlers = this._events[evt];
+
+  if (!handlers) return [];
+  if (handlers.fn) return [handlers.fn];
+
+  for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {
+    ee[i] = handlers[i].fn;
+  }
+
+  return ee;
+};
+
+/**
+ * Return the number of listeners listening to a given event.
+ *
+ * @param {(String|Symbol)} event The event name.
+ * @returns {Number} The number of listeners.
+ * @public
+ */
+EventEmitter.prototype.listenerCount = function listenerCount(event) {
+  var evt = prefix ? prefix + event : event
+    , listeners = this._events[evt];
+
+  if (!listeners) return 0;
+  if (listeners.fn) return 1;
+  return listeners.length;
+};
+
+/**
+ * Calls each of the listeners registered for a given event.
+ *
+ * @param {(String|Symbol)} event The event name.
+ * @returns {Boolean} `true` if the event had listeners, else `false`.
+ * @public
+ */
+EventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
+  var evt = prefix ? prefix + event : event;
+
+  if (!this._events[evt]) return false;
+
+  var listeners = this._events[evt]
+    , len = arguments.length
+    , args
+    , i;
+
+  if (listeners.fn) {
+    if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);
+
+    switch (len) {
+      case 1: return listeners.fn.call(listeners.context), true;
+      case 2: return listeners.fn.call(listeners.context, a1), true;
+      case 3: return listeners.fn.call(listeners.context, a1, a2), true;
+      case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;
+      case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
+      case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
+    }
+
+    for (i = 1, args = new Array(len -1); i < len; i++) {
+      args[i - 1] = arguments[i];
+    }
+
+    listeners.fn.apply(listeners.context, args);
+  } else {
+    var length = listeners.length
+      , j;
+
+    for (i = 0; i < length; i++) {
+      if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);
+
+      switch (len) {
+        case 1: listeners[i].fn.call(listeners[i].context); break;
+        case 2: listeners[i].fn.call(listeners[i].context, a1); break;
+        case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;
+        case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;
+        default:
+          if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {
+            args[j - 1] = arguments[j];
+          }
+
+          listeners[i].fn.apply(listeners[i].context, args);
+      }
+    }
+  }
+
+  return true;
+};
+
+/**
+ * Add a listener for a given event.
+ *
+ * @param {(String|Symbol)} event The event name.
+ * @param {Function} fn The listener function.
+ * @param {*} [context=this] The context to invoke the listener with.
+ * @returns {EventEmitter} `this`.
+ * @public
+ */
+EventEmitter.prototype.on = function on(event, fn, context) {
+  return addListener(this, event, fn, context, false);
+};
+
+/**
+ * Add a one-time listener for a given event.
+ *
+ * @param {(String|Symbol)} event The event name.
+ * @param {Function} fn The listener function.
+ * @param {*} [context=this] The context to invoke the listener with.
+ * @returns {EventEmitter} `this`.
+ * @public
+ */
+EventEmitter.prototype.once = function once(event, fn, context) {
+  return addListener(this, event, fn, context, true);
+};
+
+/**
+ * Remove the listeners of a given event.
+ *
+ * @param {(String|Symbol)} event The event name.
+ * @param {Function} fn Only remove the listeners that match this function.
+ * @param {*} context Only remove the listeners that have this context.
+ * @param {Boolean} once Only remove one-time listeners.
+ * @returns {EventEmitter} `this`.
+ * @public
+ */
+EventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {
+  var evt = prefix ? prefix + event : event;
+
+  if (!this._events[evt]) return this;
+  if (!fn) {
+    clearEvent(this, evt);
+    return this;
+  }
+
+  var listeners = this._events[evt];
+
+  if (listeners.fn) {
+    if (
+      listeners.fn === fn &&
+      (!once || listeners.once) &&
+      (!context || listeners.context === context)
+    ) {
+      clearEvent(this, evt);
+    }
+  } else {
+    for (var i = 0, events = [], length = listeners.length; i < length; i++) {
+      if (
+        listeners[i].fn !== fn ||
+        (once && !listeners[i].once) ||
+        (context && listeners[i].context !== context)
+      ) {
+        events.push(listeners[i]);
+      }
+    }
+
+    //
+    // Reset the array, or remove it completely if we have no more listeners.
+    //
+    if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;
+    else clearEvent(this, evt);
+  }
+
+  return this;
+};
+
+/**
+ * Remove all listeners, or those of the specified event.
+ *
+ * @param {(String|Symbol)} [event] The event name.
+ * @returns {EventEmitter} `this`.
+ * @public
+ */
+EventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {
+  var evt;
+
+  if (event) {
+    evt = prefix ? prefix + event : event;
+    if (this._events[evt]) clearEvent(this, evt);
+  } else {
+    this._events = new Events();
+    this._eventsCount = 0;
+  }
+
+  return this;
+};
+
+//
+// Alias methods names because people roll like that.
+//
+EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
+EventEmitter.prototype.addListener = EventEmitter.prototype.on;
+
+//
+// Expose the prefix.
+//
+EventEmitter.prefixed = prefix;
+
+//
+// Allow `EventEmitter` to be imported as module namespace.
+//
+EventEmitter.EventEmitter = EventEmitter;
+
+//
+// Expose the module.
+//
+if ('undefined' !== typeof module) {
+  module.exports = EventEmitter;
+}