Update changelog for new attrs added to root span.
## New Features
-* Added support for [adding custom attributes directly to spans](https://godoc.org/github.com/newrelic/go-agent/v3/newrelic#Segment.AddAttribute).
+* Added support for [adding custom attributes directly to
+ spans](https://godoc.org/github.com/newrelic/go-agent/v3/newrelic#Segment.AddAttribute).
These attributes will be visible when looking at spans in the Distributed
Tracing UI.
sgmt.AddAttribute("mySpanInt", 123)
```
+* Custom attributes added to the transaction with `txn.AddAttribute` are now
+ also added to the root Span Event and will be visible when looking at the
+ span in the Distributed Tracing UI. These custom attributes can be disabled
+ from all destinations using `Config.Attributes.Exclude` or disabled from Span
+ Events specifically using `Config.SpanEvents.Attributes.Exclude`.
+
+* Agent attributes added to the transaction are now also added to the root Span
+ Event and will be visible when looking at the span in the Distributed Tracing
+ UI. These attributes include the `request.uri` and the `request.method` along
+ with all other attributes listed in the [attributes section of our
+ godocs](https://godoc.org/github.com/newrelic/go-agent/v3/newrelic#pkg-constants).
+ These agent attributes can be disabled from all destinations using
+ `Config.Attributes.Exclude` or disabled from Span Events specifically using
+ `Config.SpanEvents.Attributes.Exclude`.
+
+
### Bug Fixes
* Fixed an issue where it was impossible to exclude the attributes
