Allow belongs to associations to be saved when the associated object is null.
Remove accidentally added capitalize and camelize
DateTransform serialises into ISO8601 string
add test for multiwords typeKey
Changing an async belongsTo association does not load unfetched record.

[Fixes #1567]
Merge pull request #2158 from Cyril-sf/cf/unload-belongs-to

Changing an async belongsTo association does not load unfetched record.
Update TRANSITION.md

Fixing syntax.
Merge pull request #2160 from gogogarrett/patch-1

Update TRANSITION.md
Fix typo
Merge pull request #2161 from mitchlloyd/typo-fix

Fix typo
Expose embedded options

Exposes embedded options helpers while keeping them private.

It is useful to have access to these, for example if one wanted to
make embedding records the default behaviour for their serializer they
could do that by overriding the helper methods.
Merge pull request #2163 from emberjs/exposeEmbeddedOptions

Expose embedded options
Batch hasMany requests with many id's to avoid max URL length issues
Refactor hasMany code for comments and clarity
Merge pull request #2166 from emberjs/has-many-cleanup

Refactor hasMany code for comments and clarity
Brocfile: Adds hinting for node.

* Won't complain about `process` anymore.
Merge pull request #2174 from duggiefresh/jshint-brocfile

Brocfile: Adds hinting for node.
Adds JSHint globals.

* Adds semicolons.
Merge pull request #2175 from duggiefresh/lint-tests-files

Adds JSHint globals.
Merge pull request #1985 from bradleypriest/date

DateTransform serialises into ISO8601 string