v0.8.0

• new add_auth_to_spec() function to allow you to use the Plumber swagger docs with the new
  auth_filter() function.
• max_sessions argument added to deploy_app() which enables the new Polished Hosting load balancer.
• gh_pat argument added to deploy_app() which can be set to deploy/use private GitHub
  packages on Polished Hosting.
• new function auth_filter() which makes it very simple to add Polished Auth to
  Plumber APIs.
• more user friendly error messages for toast notifications.
• added Hosting support for new "me-west1" region.