Note in changelog

CHANGELOG.md

@@ -8,10 +8,10 @@ For changes pre-v1.5 see the [v1.4](https://github.com/absinthe-graphql/absinthe
 - Feature: Output rendered SDL for a schema
 - Feature: Substantially lower subscription memory usage.
 - Documentation: Testing guide, numerous fixes and updates
-- Breaking Change: Scalar outputs are now type checked and will raise exceptions
-if the result tries to send the wrong data type in the result.
+- Breaking Change: Scalar outputs are now type checked and will raise exceptions if the result tries to send the wrong data type in the result.
 - Breaking Change: `telemetry` event names [changed](https://github.com/absinthe-graphql/absinthe/pull/782) from the `alpha` to match an emerging naming convention for tracing.
 - Breaking Change: Added phase to check validity of field names according to graphql spec. Might break existing schema's. Remove the `Absinthe.Phase.Schema.Validation.NamesMustBeValid` from the schema pipeline if you want to ignore this.
+- Breaking Change: To match the GraphQL spec, we [no longer](https://github.com/absinthe-graphql/absinthe/pull/816) add a non-null error when a resolver on a non-null field explicitly returns it's own error.
 
 ## v1.5.0 (Alpha)