[BUGFIX beta] Export more public API's via modules

This change allows to import more public API's via modules:

- import Serializer from "ember-data/serializer"
- import EmbeddedRecords from "ember-data/serializers/embedded-records-mixin"

addon/index.js

@@ -40,7 +40,7 @@ import {
 import Model from "ember-data/model";
 import Snapshot from "ember-data/-private/system/snapshot";
 import Adapter from "ember-data/adapter";
-import Serializer from "ember-data/-private/system/serializer";
+import Serializer from "ember-data/serializer";
 import DebugAdapter from "ember-data/-private/system/debug";
 
 import {
@@ -70,7 +70,7 @@ import {
   RESTSerializer
 } from "ember-data/-private/serializers";
 import "ember-inflector";
-import EmbeddedRecordsMixin from "ember-data/-private/serializers/embedded-records-mixin";
+import EmbeddedRecordsMixin from "ember-data/serializers/embedded-records-mixin";
 
 import {
   Transform,

addon/serializers/json.js

@@ -1,6 +1,6 @@
 import Ember from 'ember';
 import { assert, warn } from 'ember-data/-private/debug';
-import Serializer from "ember-data/-private/system/serializer";
+import Serializer from "ember-data/serializer";
 import coerceId from "ember-data/-private/system/coerce-id";
 import normalizeModelName from "ember-data/-private/system/normalize-model-name";
 import { modelHasAttributeOrRelationshipNamedType } from "ember-data/-private/utils";

lib/ember-data-shims.js

@@ -3,10 +3,12 @@
     var shims = {
       'ember-data':                          { default: DS },
       'ember-data/model':                    { default: DS.Model },
+      'ember-data/mixins/embedded-records':  { default: DS.EmbeddedRecordsMixin },
       'ember-data/serializers/rest':         { default: DS.RESTSerializer },
       'ember-data/serializers/active-model': { default: DS.ActiveModelSerializer },
       'ember-data/serializers/json':         { default: DS.JSONSerializer },
       'ember-data/serializers/json-api':     { default: DS.JSONAPISerializer },
+      'ember-data/serializer':               { default: DS.Serializer },
       'ember-data/adapters/json-api':        { default: DS.JSONAPIAdapter },
       'ember-data/adapters/rest':            { default: DS.RESTAdapter },
       'ember-data/adapter':                  { default: DS.Adapter },

tests/unit/modules-test.js

@@ -0,0 +1,74 @@
+import { module, test } from 'qunit';
+
+import Transform from "ember-data/transform";
+
+import Adapter from "ember-data/adapter";
+import JSONAPIAdapter from "ember-data/adapters/json-api";
+import RESTAdapter from "ember-data/adapters/rest";
+
+import Store from "ember-data/store";
+
+import Model from "ember-data/model";
+import attr from "ember-data/attr";
+import { belongsTo, hasMany } from "ember-data/relationships";
+
+import Serializer from "ember-data/serializer";
+import JSONSerializer from "ember-data/serializers/json";
+import JSONAPISerializer from "ember-data/serializers/json-api";
+import RESTSerializer from "ember-data/serializers/rest";
+import EmbeddedRecordsMixin from "ember-data/serializers/embedded-records-mixin";
+
+module("unit/modules - public modules");
+
+test("ember-data/transform", function(assert) {
+  assert.ok(Transform);
+});
+
+test("ember-data/adapter", function(assert) {
+  assert.ok(Adapter);
+});
+
+test("ember-data/adapters/json-api", function(assert) {
+  assert.ok(JSONAPIAdapter);
+});
+
+test("ember-data/adapters/rest", function(assert) {
+  assert.ok(RESTAdapter);
+});
+
+test("ember-data/attr", function(assert) {
+  assert.ok(attr);
+});
+
+test("ember-data/relationships", function(assert) {
+  assert.ok(belongsTo);
+  assert.ok(hasMany);
+});
+
+test("ember-data/store", function(assert) {
+  assert.ok(Store);
+});
+
+test("ember-data/model", function(assert) {
+  assert.ok(Model);
+});
+
+test("ember-data/mixins/embedded-records", function(assert) {
+  assert.ok(EmbeddedRecordsMixin);
+});
+
+test("ember-data/serializer", function(assert) {
+  assert.ok(Serializer);
+});
+
+test("ember-data/serializers/json-api", function(assert) {
+  assert.ok(JSONAPISerializer);
+});
+
+test("ember-data/serializers/json", function(assert) {
+  assert.ok(JSONSerializer);
+});
+
+test("ember-data/serializers/rest", function(assert) {
+  assert.ok(RESTSerializer);
+});