DJ now supports named queues
queues name must be an array on query
should be able to set queue on DJ#enqueue
Worker.queues is always an array
YAML loading should work even if AR object is not in default scope
Merge pull request #243 from capitaine-train/default_scope

YAML loading should work even if AR object is not in default scope
Add note about deserialization fix to CHANGELOG
Added ability for enqueue hook to modify the job object before being saved.
Merge pull request #246 from wakemaster39/master

Added ability for enqueue hook to modify the job object before being saved.
Update changelog
Version bump to 3.0.0.pre
Remove ActiveRecord backend. Replace the spec backend with an in-memory test class.
Merge branch 'feature/extract-ar' into integration-3.0
Merge branch 'feature/named-queues' into integration-3.0

Conflicts:
	lib/delayed/backend/active_record.rb
	lib/generators/delayed_job/templates/migration.rb
	spec/spec_helper.rb
Merge branch 'master' into integration-3.0
Add twitter link
Fix link textile formatting
Update changelog
Use AR for testing serialization of orm objects.
Bring back AR-specific serialization since it's likely to be used even with a non-AR backend.