rails/sprockets-rails — pull request #110 by lucasmazza (2014-01-30 16:58:09+00:00)
Title: Increment the `env.version` with `asset_host` and `relative_url_root`

This way such configurations will affect the asset fingerprints and the environment cache, since they might affect the assets contents.

Let me know if there is any other configuration that should affect the fingerprinting/cache that should be on this list.