Some issues I ran into while releasing Avatica 1.12.0 that should be clarified in the HOWTO document on the website:
- GPG signs using a default key (I think this is the first key, if no default is set). I had multiple keys and my Apache key was not my first key.
- I was not 100% sure that `-DdevelopmentVersion` should be the version after the current release.
- It took a while to work out how to authenticate against Apache's maven repo. See http://www.apache.org/dev/publishing-maven-artifacts.html#dev-env for solution
The HOWTO for Calcite should also be updated to aid future release managers.