[DOC beta] Overhaul documentation for reload / background reload

[CLEANUP ds-transform-pass-options]

[CLEANUP ds-serialize-ids-and-types]

[CLEANUP ds-finder-include]

[CLEANUP ds-references]

[DOC] fix example syntax

(will fix highlighting in docs)

[DOC] Update README.md for improve ES6 syntax in example

Port the 2.5.x changelog entires to master

[BUGFIX beta] Overhaul attr/relationships imports in model blueprint

[DOC beta] Clarify DS.Model#changedAttributes()

Older versions of node can't use the concise method syntax.

[DOC] Update CONTRIBUTING.md for feature flags

When a model is generated via `ember generate model` without attributes
and relationships, then ...

[BUGFIX release] Only setup babel options once.

[DOC beta] Make clear where `blog` is coming from

`included` is called for each instance of `EmberApp` created
within the consuming applicationm, ...

The `modelNameFromPayloadKey` and `payloadKeyFromModelName` hooks on the
serializer allow to cus...

Fixup feature flagging infrastructure.

Prior to this, the feature flags would only be processed for
`production` builds (from within an...

Fix `isUpdating` for DS.AdapterPopulatedRecordArray#update()

[CLEANUP] remove reference to no more used isNewSerializerAPI flag

Closes #4289
Closes #3688

This flag has been used when transitioning from 1.13 to 2.0 and is no
more needed in 2.x

Closes #4289

The `isUpdating` flag is not set to `true` when the `update()` method on
a `DS.AdapterPopulatedR...

[BUGFIX beta] convert single record sideloaded records to plural

Before, `_normalizeArray` would call `forEach` even if the object wasn't
an array. We guard agai...

* Update "ember-cli-blueprint-test-helpers" to v0.11.0
* tests/blueprints: Use new testing API

pass snapshot through to urlForFindHasMany and urlForFindBelongsTo

A property lookup is used to speed up the hot path of applying transforms
when normalizing data ...

[skip ci] fix invalid indentation in codeclimate.yml

pass DS.SnapshotRecordArray to build-url-mixin buildURL

Enhance blueprints: only extend from application entity if it exists

This change updates the blueprints for adapter and serializer, so they
extend from the applicati...

fix rest-adapter-test typo

[DOC release] Mistaken back tick.

[BUGFIX beta] add custom warning when invalid JSON is returned

[FEATURE ds-extended-errors] fix usage of isEnabled

Using `isEnabled()` not within "if / else if / else" doesn't work since
the statement will not b...

When the server returns an empty string for a response which doesn't
indicate that the content i...

[FEATURE ds-extended-errors] add DS.ServerError

Update "blueprint-test-helpers" and "ember-cli"

[CLEANUP] Use Array.isArray everywhere instead of Ember.isArray

Use the dot reporter to reduce the noise in travis output

[FEATURE ds-links-in-record-array] Add links to RecordArray when present on payload

[FEATURE ds-extended-errors] Make adapter error extendable and add more error types

Moved the adapter errors into the public API space.

JSONSerializer should normalize the links object using the attrs hash

Uses bin/start with friendly error message for npm start.

Speed up JSONSerializer#applyTransforms

[BUGFIX beta] Ensure `null` is returned for Reference#value()

[BUGFIX canary] Improve finders assertion messages

Running npm start (which originally ran ember serve) before runing npm install and bower install...

[DOC canary] Update extractMeta documentation

The documentation states that `null` is returned for `Reference#value()`,
when it is not yet loa...

Fix incorrect reference to `push` in the `findRecord` docs

when calling setCanonicalRecord with null it should check for presence
of canonicalState instead...

Tweaks to docs on error responses

This tests checkes that the attrs object in serializers are taking into account
inside the links...