Breaking Changes

Add explicit Jetty instrumentation and enable by default #2227
- Spans with the operation name of jetty.request will now have the operation name of servlet.request
- Span duration may increase slightly due to a change in start/finish points.
Servlet Async Dispatch should not result in another servlet.request span #2238
- servlet.request spans that were the result of a Servlet Dispatch will not have the operation name of servlet.dispatch instead
- servlet.dispatch as a tag will no longer be used

Improvements

Allow for the span completing a Scala Promise to be reactivated #2233
- To enable set system property dd.trace.integration.scala_promise_completion_priority.enabled=true
- or environment variable DD_TRACE_INTEGRATION_SCALA_PROMISE_COMPLETION_PRIORITY.ENABLED=true
[Community] Allow disabling Status404Rule leaving URLAsResourceNameRule enabled #2232 (Thanks @deisenzimmer for the contribution!)
Add mongodb command as db.operation tag #2259
Enable automatic generation of missing serialVersionUid for field-injected Serializable types #2252
Support DD_PROXY_NO_PROXY setting for agent HTTP connections #2250
Log the final configured agent URL and unix-domain-socket #2248

[Integrations] JMS: use destination name rather than message destination name for resource name #2253
Move nested helper classes to top level. Fixes issue with isolated classloaders #2260
[Integrations] MongoDB: avoid double registration of tracing subscribers #2255
Fix double counting and State overwriting for Scala Promise/Future #2291
Fix bug in RateLimitedLogger where a negative timestamp stopped all future logging #2290
Make jersey error handling work on versions 2.30+ #2251
Upgrade byte-buddy dependency to 1.10.19 to pick up jsr14 fix #2231
Tweak generated field-injection getter and setter names… #2229