[InterNetNews/inn] df9cd1: Modernize our release process

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: df9cd1b0aa4eaacc582f7c41c41c4caf7e374fcb
      https://github.com/InterNetNews/inn/commit/df9cd1b0aa4eaacc582f7c41c41c4caf7e374fcb
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-04-15 (Sat, 15 Apr 2023)

  Changed paths:
    M doc/pod/hacking.pod

  Log Message:
  -----------
  Modernize our release process

Now that we're on GitHub, let's use its features like signed commit
tags, tag comparison, and pre-releases.

We no longer need providing 4 different checksums (MD5, SHA1, SHA256,
SHA256) and a diff from the previous release.  The "testing" directory
on ftp.isc.org is no longer useful.  We'll just keep the final release
along with its PGP signature on ftp.isc.org.