Breaking Change

Attempting to activate a null span should not leave the scope stack in an invalid state #2945

Improvements

Add config option to disable context propagation for specified JMS topics and queues and rabbit queues and exchanges #2943 #2955
Add 'root-servlet' as service name to avoid lengthy tomcat naming for '/' #2924

Prevent DDSpan from escaping unwrapped with OpenTracing #2967
Rework jetty-client instrumentation #2963
Refactor gRPC client instrumentation for better profiler integration #2960
[Profiling] Google HTTP client checkpoints/propagation fix #2950
[Profiling] refactor ning/grizzly asynchttpclient instrumentation and make it track activity #2939 #2972
Defer creation of JMS transacted span queue… #2947
namespace RunnableInstrumentation so it can be disabled in clojure apps #2925
Various async propagation changes #2916

Fix instrumentation for Kafka Streams 2.6+ #2951
Accept null throwable in DDSpan #2915
Prevent double registration of grpc tracing interceptor when server builder is reused #2926
Fix broken pom dependencies for dd-trace-ot #2937
[CIAPP] Fix NPE when workspace path cannot be detected #2957