Backports the totality of our release script changes to support sudowoodo. Also backports changes that have been made to a few other release script files in master after 3-0-x was cut with the purpose of keeping them in sync.
* Create prepare-release script
* Add script to merge release
* Cleanup/add logging
* Move release process out of upload.py
* Add cleanup release branch
* Update release doc to reflect new scripts
* Fix to allow running with notesOnly
Also fixup release name and body when beta release.
* Fix issues found during release
* Use getRelease instead of getAssets
github.repos.getAssets is limited to 30 entries which means we may not get back the file we are looking for.
* Documentation corrections
