Add bootstrap for EPEL-8, spec tidy-up
- Use author-independent source URL
- Classify buildreqs by usage
- Drop redundant %{?perl_default_filter}
- Use %{make_build} and %{make_install}
- Drop redundant recoding of Mail::Message::Field manpage
- Fix permissions verbosely
- Make %files list more explicit
- Package README.md rather than README