Enhance livecheck to check not only version but also checksums

[db]

On 20 Mar 2018, at 14:54, Rainer Müller <raimue at macports.org> wrote:
> https://lists.macports.org/pipermail/macports-announce/
> https://github.com/macports/macports-base/blob/master/ChangeLog

macports-announce seems scant to me. I suggest using a GitHub issue, like Linuxbrew does, https://github.com/Linuxbrew/brew/issues/1, or adding changes/enhancements to macports-announce.