1.3.4

• New per backend metric varnish_backend_up with 1/0 value that reflects the latest health probe result. The Varnish bitmap uint64 varnish_backend_happy as a prometheus float metric was not that useful in detecting latest up/down per backend.
• Ability to give custom path to varnishstat with -varnishstat-path (by @zstyblik)
• Github releases now include Grafana dashboards archive. This includes all the dashboards posted by users in the repo, starting with my own.