The project has come a long way since my last post....
We now have:
1. an incremental builder
2. problem markers for api usage problems / api breaking changes
3. filters for api problem kinds
4. quick-fixes for a variety of api problem kinds
5. a wizard to set up api tooling on plugin projects
6. preference / property pages to configure options for the tooling
7. version management
8. @since tag management
Stay tuned for more updates...