Merge pull request #454 from nanobox-io/hotfix/idempotence

fix an idempotency problem when we left cruft after a failed build

Merge branch 'update'

Merge pull request #424 from nanobox-io/feature/server

Feature/server

update version to 2.0.4

update the version and changelog to 2.0.3

update version and changelog

update version to 2.0.1

Merge branch 'version'