message: Upgrade to Rust 2021 edition
diff: @@ -3,7 +3,7 @@ name = "fathom"
  version = "0.1.0"
  authors = ["YesLogic Pty. Ltd. <info@yeslogic.com>"]
  repository = "https://github.com/yeslogic/fathom"
  -edition = "2018"
  +edition = "2021"
  rust-version = "1.56.0"
  publish = false
  