title: Backbone model fires "change" event twice
body: <p>I just started working on backbonejs about a week ago and i discovered that my model is being saved twice on listening to calling "change" event from my view .</p>
  
  <p>Basically what i have is a table which user can edit, whenever the user updates the cell value i want to push it to server , for which i have defined a "change" method and i am calling it every time a cell is updated.</p>
  
  <p>The problem i am facing is that id model is saved twice on calling "change" event. </p>
  
  <p>If i pass wait:true for model.save, change event is fired thrice</p>
  
  <p>AM i doing something wrong ,or am is missing something obviuos? Any help would be greatly appreciated</p>
  
  <p>Below is my code</p>
  
  <pre><code>var Territory = Backbone.Model.extend({
     initialize: function () {
          Backbone.Model.prototype.initialize.apply(this, arguments);
          this.on("change", function (model, options) {
              if (options &amp;&amp; options.save === false) return;
              model.save();
          });
      }
  });
  
  var Territories = Backbone.Collection.extend({
      model: Territory,
      url: "js/bookings.json"
  });
  var territories = new Territories();
  
  var columns = [{
      name: "bookingId",
      label: "ID",
      editable: false,
      cell: Backgrid.IntegerCell.extend({
          orderSeparator: ''
      })
  }, {
      name: "bookingTime",
      label: "Time",
      cell: "string"
  }, {
      name: "bookingUser",
      label: "Name",
      cell: "string"
  }, {
      name: "reserveDate",
      label: "Date",
      cell: "string"
  }, {
      name: "bookingEmail",
      label: "Email",
      cell: "string"
  }];
  
  var grid = new Backgrid.Grid({
      columns: columns,
      collection: territories
  
  });
  
  grid.listenTo(territories, "change", function () {
      alert(territories.pluck('bookingId'))
  });
  </code></pre>
  
  <p>Any help would be greatly appreciated.</p>