Do not call adapter.deleteRecord for a record that is already saved and deleted.
Remove DS.AttributeChange.
Use Ember getter instead of accessing the property directly.
Fix rollback on invalid record after set
Post release VERSION bump
1.0.0-beta.7 CHANGELOG
actually update version for post-release version bump
Merge pull request #1749 from vseventer/master

Use Ember getter to retrieve the RESTAdapter headers.
fix small typo in CHANGELOG.md
Remove duplicate changelog entry.
Merge pull request #1761 from ugisozols/remove_dup_changelog_entry

Remove duplicate changelog entry.
Improve store docs to use container lookup not concrete class
Merge pull request #1770 from alexspeller/improve-store-docs

Improve store docs to use container lookup not concrete class
Use string model lookup instead of class lookup
Merge pull request #1771 from alexspeller/use-string-lookup-in-other-places

Use string model lookup instead of class lookup in docs
Fixed typo in isDirty example

It should be a get call instead of a set call
Merge pull request #1772 from ujjwalt/patch-1

Fixed typo in isDirty example
Use the ApplicationAdapter property instead of creating a custom Store
just to create a custom adapter.
Copy-editing
Merge pull request #1775 from bmac/use-modern-adapter-syntax

Use the ApplicationAdapter property instead of creating a custom Store