… new namespace." This reverts commit 8896b4f. Conflicts: activemodel/lib/active_model.rb activemodel/lib/active_model/serializable.rb activemodel/lib/active_model/serializer.rb activemodel/test/cases/serializer_test.rb
…espace. The following constants were renamed: ActiveModel::Serialization => ActiveModel::Serializable ActiveModel::Serializers::JSON => ActiveModel::Serializable::JSON ActiveModel::Serializers::Xml => ActiveModel::Serializable::XML The main motivation for such a change is that `ActiveModel::Serializers::JSON` was not actually a serializer, but a module that when included allows the target to be serializable to JSON. With such changes, we were able to clean up the namespace to add true serializers as the ArraySerializer.