When updating, change the following files (if needed):

- Add rights for contributors (copyright)
- ChangeLog
- Check for spelling errors in ChangeLog and manpage.
- doc/create-man.sh (DATE, version)
- Generate a new manpage.
- README
- src/oui.h (refresh via update-oui-database.sh)
- configure.ac (VERSION)
- Test on Debian Sid.
- Generate extra tarballs via 'make dist' and upload to GitHub
