Node.js agent v2.4.0-beta

Improvements

• Rewrote the cassandra-cql and memcached instrumentations using the DatastoreShim.

• Improved instrumentation matching.

  Previously, the agent would determine which instrumentation would run for a given module being loaded using the basename of the file path. This lead to false positives (e.g. myapp/lib/express.js would trigger the express instrumentation) which we previously just ignored. Matches are now determined using the string passed to require. This means you can now match local relative paths (./lib/something) as well as package-relative paths (amqplib/callback_api).