AsyncQueue
    The AsyncQueue module allows you to create a chain of function callbacks executed in order via setTimeout.  It also supports timeout chained iterations for each item in the queue as well as promotion, deletion, and other functionality.

3.0.0
    * queue-base is now part of yui.  queue-run was renamed async-queue and
      both async-queue and queue-promote are now independent modules
    * AsyncQueue defaults to asynchronous callback execution (again)

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