WIP: #23
Merge branch 'master' of github.com:mcamou/sequel-uow into #23

Conflicts:
	lib/association.rb
	lib/entity_serializer.rb
WIP #23
WIP: #23
Merge branch 'master' of https://github.com/nandosola/sequel-uow into #23

Conflicts:
	lib/association.rb
More work on #23
Merge pull request #34 from mcamou/#23

Close #23: eliminate BaseEntity attributes