0.18.0

Bug Fixes

• core: fix runtime metrics having prefix in double (#843), fixes #842
• koa-router: fix wrong route for koa-router 8 (#844)
• fastify: fix context propagation for route handlers in fastify (#845), fixes #830
• http: Account for path conventions for WHATWG url (#848), fixes #847

Features

• @google-cloud/pubsub: Add @google-cloud/pubsub integration (#834)

Improvements

• express: Add configuration option to disable Express middleware span instrumentation (#775)