Fixup CHANGELOG again.
* `Transaction.GetTraceMetadata()` returns a
[TraceMetadata](https://godoc.org/github.com/newrelic/go-agent#TraceMetadata)
- which contains distributed tracing identifiers. This struct has a
- [Map](https://godoc.org/github.com/newrelic/go-agent#TraceMetadata.Map)
- method to facilitate logging the fields with specific keys for
- trace/log context linking.
+ which contains distributed tracing identifiers.
* `Transaction.GetLinkingMetadata()` returns a
[LinkingMetadata](https://godoc.org/github.com/newrelic/go-agent#LinkingMetadata)
- which contains the fields needed to link data to a trace or entity. This
- struct has a
- [Map](https://godoc.org/github.com/newrelic/go-agent#LinkingMetadata.Map)
- method to facilitate logging the fields with specific keys for trace/log
- context linking.
+ which contains the fields needed to link data to a trace or entity.
* Added a new plugin for the [Logrus logging
framework](https://github.com/sirupsen/logrus). This plugin leverages the new `GetTraceMetadata` and
