Fix minor code loading issue.
Add a couple more Ruby versions to the mix.
Bump version, update changelog.
Update gem description a touch.
Updated ruby-advisory-db
Fix more code loading issues.
Fix test that's failing due to recent vulnerability reports.

... really need a more reliably repeatable way to handle this, like using a test vuln DB.
Another thing to not auto-require.
Cruft removal.
Update changelog.
*sigh*  Should've checked a more recent result...