Error if there's a reference loop
Small fixes in README
Change `HOSTS_BASEPATH` to `HOSTESSE_BASEPATH`

The rationale is that all configuration keys need the `HOSTESSE` prefix
to make good environment variable names.
Add To-do roadmap to 1.0.0
Retrieve configuration after storage
Test `Hostesse::CLI#run` without touching the filesystem
Default hosts path in multiple OSs
Supress all CLI output in tests
Remove done to-do
Binary