• 2019-01-11: Version 0.2.5
• RFE getdnsapi/getdns#408: Document trust_anchors_backoff_time
  in stubby.yml.example. Thanks Jonathan Underwood
• RFE #148: Document tls_ciphersuites, tls_cipher_list, tls_min_version
  and tls_max_version in stubby.yml.example. Thanks Jonathan Underwood
• RFE #149: Added Google Public DNS to stubby.yml.example.
  Thanks Bruno Pagani