Do not call adapter.deleteRecord for a record that is already saved and deleted.
Remove DS.AttributeChange.
Fix rollback on invalid record after set
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
change documentation from hash to payload
Merge pull request #1782 from denisnazarov/patch-1

change doc from hash to payload
Minor typo
Update data adapter test with new Ember version
Merge pull request #1785 from teddyzeenny/debug-adapter

Update data adapter test with new Ember version
Make sure data adapter tests pass for Ember <= 1.4