* Add a unique hash of the configuration options to the kubeconfig path.

* Avoid `instance_eval`ing a `nil` block during configuration.

* Fix bug causing kubeconfig to not get refreshed prior to executing …

…commands.

* Accept `environment` instead of `definition` instances.

* Refresh kubeconfig in more places.

  - Before setup
  - Before deploy

* Refresh kubeconfig earlier and more often so it's ready during setup.

* Birthday!