- Update HISTORY file, commit

- First tag the release, say 2.2.0c

  git tag 2.2.0c

  Then push the tag:

  git push --tags

- build the release archive:

git archive -o /tmp/cde-src-[version tag].tar.gz [version tag] \
    --prefix cde-[version tag]/

where [version tag] is something like 2.2.0c 

## look into signed tags?

   git tag -s 2.2.1 -m '2.2.1 release'




