Merge pull request #618 from tsloughter/attributes-to-api

move attribute smodule to api

Author: Tristan Sloughter

CHANGELOG.md

@@ -9,8 +9,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## API
 
-- [Add `otel_tracestate' module for creating and updating
+### Changes
+
+- [Add `otel_tracestate` module for creating and updating
   tracestate](https://github.com/open-telemetry/opentelemetry-erlang/pull/607)
+- [Attributes module `otel_attributes` moved to
+  SDK](https://github.com/open-telemetry/opentelemetry-erlang/pull/618)
+
+## SDK
+
+### Changes
+
+- [Attributes module `otel_attributes` moved to
+  SDK](https://github.com/open-telemetry/opentelemetry-erlang/pull/618)
 
 ## Experimental API