Release 2.8.0 (#241)

* changelog

* added benchmarking results

CHANGELOG.md

@@ -1,5 +1,25 @@
 # Change Log
 
+## 2.8.0 - 2020-11-24
+- Optimized creating, parsing, and serializing trace IDs
+[PR 212](https://github.com/aws/aws-xray-sdk-java/pull/212)
+- Fixed setParent behavior for NoOp subsegments
+[PR 215](https://github.com/aws/aws-xray-sdk-java/pull/215)
+- Added a faster random source configuration
+[PR 218](https://github.com/aws/aws-xray-sdk-java/pull/218)
+- Lowered log level on IMDS error messages
+[PR 219](https://github.com/aws/aws-xray-sdk-java/pull/219)
+- Removed nanosecond-time resolution where unneeded for performance
+[PR 224](https://github.com/aws/aws-xray-sdk-java/pull/224)
+- Fixed log error context missing strategy stack traces
+[PR 235](https://github.com/aws/aws-xray-sdk-java/pull/235)
+- Added isForcedSampling support configurability to sampling strategies
+[PR 232](https://github.com/aws/aws-xray-sdk-java/pull/232)
+- Add top-level method for context-free endSubsegment
+[PR 229](https://github.com/aws/aws-xray-sdk-java/pull/229)
+- Add ThreadLocal-safe Entity.run() method
+[PR 240](https://github.com/aws/aws-xray-sdk-java/pull/240)
+
 ## 2.7.1 - 2020-08-28
 - Fix ClassCastException caused by change in 2.7.0
 [PR 202](https://github.com/aws/aws-xray-sdk-java/pull/202)

aws-xray-recorder-sdk-benchmark/README.md

@@ -200,6 +200,7 @@ In the latest version of our SDK (2.2.x), the typical request-response lifecycle
 ### Benchmark Data by SDK Version
 
 Note that beginning with version 2.7.x, benchmarks are only ran with the Sample Time and Throughput modes.
+Beginning with version 2.8.x, we publish the raw output of the benchmarking tests in the [results](./results) directory.
 
 #### 1.3.x
 <details><summary>Show</summary>