message: Fixed broken collaborative cell.
diff: @@ -271,8 +271,8 @@ class Cell extends api.CollaborativeObject implements api.ICell {
  * Handles a message coming from the remote service
  */
  private processRemoteMessage(message: api.IBase) {
  - assert.equal(this.offset + 1, message.offset);
  - this.offset = message.offset;
  + // server messages should only be delivered to this method in sequence number order
  + assert.equal(this.sequenceNumber + 1, message.sequenceNumber);
  this.sequenceNumber = message.sequenceNumber;
  this.minimumSequenceNumber = message.minimumSequenceNumber;
  