message: Upgrade pnet_macros to Rust 2021
diff: @@ -9,7 +9,7 @@ description = "Automatic bit manipulation for binary data formats"
  readme = "../README.md"
  keywords = ["networking", "bitfields", "packet", "protocol"]
  categories = ["network-programming", "parsing"]
  -edition = "2018"
  +edition = "2021"
  [lib]
  proc-macro = true
  