trigger build when a dependency changes

That would be so cool. In a project I'm working on, a module we depended on w/ semver'd "N.N.x" made a bugfix release that broke our code, and we didn't realize this until days later.

If we could automatically trigger a build any time a dependency issues a new release (that's still within the version requirements we supplied), that would be such a killer feature, especially for node projects.