rails/rails — pull request #15254 by DNNX (2014-05-22 18:40:17+00:00)
Title: Rename `stack` to `queue`

Because it is used as a queue (FIFO), not as a stack (LIFO).

* http://en.wikipedia.org/wiki/Stack_(abstract_data_type)
* http://en.wikipedia.org/wiki/Queue_(data_structure)