Queue (promotion extention)
    The Queue module in its simplest form is just that: a simple queuing
    mechanism.  Items added to the Queue are removed via next().  The
    queue-promote module extends the Queue prototype with promote(item),
    remove(item), and indexOf(item) methods.

3.0.0
    * queue-base is now part of yui. queue-run was renamed async-queue and both
      it and queue-promote are now independent modules

3.0.0 beta 1
    * Overhaul.  Broken into queue-base, queue-promote, and queue-run.

    See the user guide and API docs for more detail.

3.0.0 PR2
    No changes

3.0.0 PR1
    Initial release
