This removes `release: "your_release_name" not found` errors seen for releases with `installed: false` when running `helmfile sync` and `helmfile apply`.
The problem was that helmfile had been running `helm status` to detect releases to be deleted. helmfile now use `helm list ^YOUR_RELEASE_NAME$` to detect if the release is currently installed or not, which emits no error-like logs on against uninstalled releases.
Fixes#507Fixes#507