Added tests and auto-bump versions for repo libraries

The included libraries have little test coverage. We should have some automated testing, and bump the 'stable' ref in the registry before each release. (Including the cross-library references).

Start by locating the included libraries and the registry data that defines each library's stable ref. Then trace the release process to identify where cross-library references are updated. Done means automated tests cover the libraries and the registry refs, including cross-library references, are bumped before each release.

Written by the indexing model from the issue text.