heroku/stillir — pull request #2 by ferd (2014-01-21 15:14:31+00:00)
Title: Track specs and allow reloading with said spec

This is more or less convenience functionality that allows to do a
refresh of a previously set spec without needing to re-submit said spec.

This adds statefulness to stillir, but depending on it is entirely
optional, past the cost impact on hopefully rare configuration setups.

Note that the saving of a piece of spec is only done if it successfuly
set the value in the first place.