The Traefik/nginx annotations are no longer either/or since 1.6.2: document that both sets are always on the Ingress, that Traefik mode needs the Traefik CRDs on the cluster (with the exact create error when they are missing), that 'supaspin upgrade' also applies log retention, and that the log-retention dblink helper lives in the extensions schema on purpose. Also stops hardcoding a version number in the --version example.
Igor